Sources
Every source cited across NukeClock articles, explainers, and country profiles. All analysis on this site is grounded in publicly available data from established research institutions, government reports, and credible news organizations.
Global Firepower(14 sources)
- India vs. Pakistan Military Comparison 2026Reference(2026-01-01)
- Iran vs. Israel Military Comparison 2026Reference(2026-01-01)
- Russia vs. United States Military Comparison 2026Reference(2026-01-01)
- United States vs Iran Military ComparisonReference(2026-01-01)
- China Military StrengthReference(2026-01-01)
- France Military StrengthReference(2026-01-01)
- India Military StrengthReference(2026-01-01)
- Iran Military StrengthReference(2026-01-01)
- Israel Military StrengthReference(2026-01-01)
- North Korea Military StrengthReference(2026-01-01)
- Pakistan Military StrengthReference(2026-01-01)
- Russia Military StrengthReference(2026-01-01)
- United Kingdom Military StrengthReference(2026-01-01)
- United States Military StrengthReference(2026-01-01)
GovInfo(12 sources)
- 50 U.S.C. Chapter 33 (War Powers Resolution codified)OfficialPrimary Doc(2026-03-04)
- 22 U.S.C. § 2776 (Congressional Review of Arms Sales)OfficialPrimary Doc(2026-03-04)
- 31 U.S.C. § 1341 (Antideficiency Act)OfficialPrimary Doc(2026-03-04)
- 50 U.S.C. § 3093 (Covert Action Findings and Reporting)OfficialPrimary Doc(2026-03-04)
- 3 U.S.C. Chapter 1 (Presidential Elections and Electors)OfficialPrimary Doc(2026-03-04)
- 50 U.S.C. Chapter 35 (IEEPA)OfficialPrimary Doc(2026-03-04)Cited in:How IEEPA Sanctions Authority Works
- 50 U.S.C. Chapter 34 (National Emergencies)OfficialPrimary Doc(2026-03-04)
- The Constitution of the United States of America (Pocket Constitution PDF)OfficialPrimary Doc(2026-03-04)
- Help America Vote Act of 2002 (Public Law 107-252)OfficialPrimary Doc(2002-10-29)
- Congressional Budget and Impoundment Control Act of 1974 (Stat. 88, p. 297)OfficialPrimary Doc(1974-07-12)
- GovInfo Congressional Hearings CollectionOfficial(2026-03-04)
- Constitution Annotated CollectionOfficial(2026-03-04)
Al Jazeera(8 sources)
- Iran live news: Iran death toll at 1,045; Turkiye says missile destroyedReporting(2026-03-04)
- US-Israel attacks on Iran: Death toll and injuries live trackerReporting(2026-03-04)
- NATO defences destroy missile fired from Iran over Mediterranean: TurkiyeReporting(2026-03-04)
- Iran live news: Israel bombs Tehran, Beirut; Trump says war to last 4 weeksReporting(2026-03-03)
- What we know on day four of US-Israeli attacks on IranReporting(2026-03-03)
- Trump Vows to Continue Attacks on Iran, Says More US Troops 'Likely' to DieReporting(2026-03-01)
- Ayatollah Ali Khamenei: The leader who shaped Iran's defianceReporting(2026-02-28)
- Explosions in downtown Tehran as smoke seen rising over the cityReporting(2026-02-28)Cited in:Did Iran Attack the U.S. Today?
Bulletin of the Atomic Scientists(8 sources)
- 2026 Doomsday Clock StatementAnalysisPrimary Doc(2026-01-27)
- 2025 Doomsday Clock StatementAnalysisPrimary Doc(2025-01-28)
- It is 90 seconds to midnight — 2023 Doomsday Clock StatementAnalysisPrimary Doc(2023-01-24)
- Russian Nuclear Forces 2025Analysis(2025-01-01)Cited in:Russia vs US Nuclear Forces: 2026 Strategic Comparison,Who Has the Most Nuclear Weapons? Complete 2025 Ranking,China Nuclear Forces and Military Power Profile,France Nuclear Forces and Military Power Profile,India Nuclear Forces and Military Power Profile,Israel Nuclear Forces and Military Power Profile,North Korea Nuclear Forces and Military Power Profile,Pakistan Nuclear Forces and Military Power Profile,Russia Nuclear Forces and Military Power Profile,United Kingdom Nuclear Forces and Military Power Profile,United States Nuclear Forces and Military Power Profile
- Nuclear Notebook: United States nuclear weapons, 2025Analysis(2025-01-01)
- Nuclear Notebook: Chinese Nuclear Weapons, 2024Analysis(2024-01-15)
- Doomsday Clock History and TimelineAnalysis
- Doomsday Clock TimelineAnalysis
International Atomic Energy Agency(7 sources)
- IAEA Statement on Iranian Nuclear FacilitiesOfficialPrimary Doc(2026-03-02)
- IAEA Director General's Report on IranOfficialPrimary Doc(2025-11-20)
- IAEA Director General's Report on IranOfficialPrimary Doc(2025-11-01)
- Chernobyl Accident 1986Official(2025-01-01)
- Radiological Dispersal DevicesOfficial(2024-01-01)
- About the IAEAOfficial
- IAEA and Iran: Monitoring and VerificationOfficialCited in:What Is Nuclear Breakout Time?
U.S. Senate(7 sources)
- Senate Glossary: Byrd RuleOfficialPrimary Doc(2026-03-04)
- Senate Select Committee on IntelligenceOfficial(2026-03-04)
- Senate Glossary: Cost EstimateOfficial(2026-03-04)
- Senate Budget Process Reference IndexOfficial(2026-03-04)
- Senate Glossary: ReconciliationOfficial(2026-03-04)
- Senate Glossary: Supplemental AppropriationsOfficial(2026-03-04)
- Senate Glossary: Omnibus Appropriations BillOfficial(2026-03-04)
CNBC(6 sources)
- Iran live updates: Trump denies Israel pulled U.S. into warReporting(2026-03-03)
- CNBC Daily Open: Markets digest U.S.-Iran war as conflict spreadsReporting(2026-03-03)
- Oil prices keep climbing as expanding conflict heightens supply risksReporting(2026-03-03)
- How Iran chooses its supreme leader, and who could be next?Reporting(2026-03-02)
- Oil soars amid Strait of Hormuz shipping fears as Iran war drives prices to nearly $80Reporting(2026-03-02)
- Dow drops more than 800 points as oil surges in response to deepening Iran conflictReporting(2026-03-02)
NCSL(6 sources)
- 2026 State Primary Election DatesReference(2026-03-04)
- NCSL Table 11: Receipt and Postmark Deadlines for Mail BallotsReference(2026-03-04)
- NCSL Table 15: Signature Cure ProcessesReference(2026-03-04)
- NCSL: Provisional BallotsReference(2026-03-04)
- NCSL: Election RecountsReference(2026-03-04)
- NCSL: Risk-Limiting AuditsReference(2026-03-04)
Centers for Disease Control and Prevention(5 sources)
- Facts About Dirty BombsOfficial(2024-04-17)
- How Potassium Iodide (KI) WorksOfficial(2024-04-17)
- Acute Radiation Syndrome (ARS)Official(2024-04-17)
- Nuclear Blast FAQOfficial(2024-04-10)
- Nuclear Explosion: Radiation EmergenciesOfficial(2024-04-01)
Congress.gov(5 sources)
- Public Law 118-50 (Emergency Supplemental Appropriations Act, 2024)OfficialPrimary Doc(2024-04-24)
- Public Law 118-1 (Repeal of 2002 Iraq AUMF)OfficialPrimary Doc(2023-06-22)
- Consolidated Appropriations Act, 2023 (Division P: Electoral Count Reform)OfficialPrimary Doc(2022-12-29)
- Public Law 107-243 (2002 Iraq AUMF)OfficialPrimary Doc(2002-10-16)
- Public Law 107-40 (2001 AUMF)OfficialPrimary Doc(2001-09-18)
Encyclopaedia Britannica(5 sources)
- Who Is More Powerful — Iran or Israel?Reference(2024-01-01)
- Mutual Assured DestructionReference(2024-01-01)
- Iraq War — BritannicaReference
- Proxy WarReferenceCited in:What Are Proxy Wars?
- Strait of HormuzReferenceCited in:What Is the Strait of Hormuz?
BBC News(4 sources)
- Pentagon identifies four of the six US soldiers killed in Iran conflictReporting(2026-03-04)
- Iran launches missiles at US forces in IraqReporting(2020-01-08)
- Qassem Soleimani: US kills top Iranian general in Baghdad air strikeReporting(2020-01-03)
- The Man Who Saved the WorldReporting(2013-09-26)
Council on Foreign Relations(4 sources)
- Confrontation Between the United States and IranReference(2026-03-01)
- Nuclear Weapons and Presidential AuthorityReference(2024-06-14)
- Iran's Networks of InfluenceReferenceCited in:What Are Proxy Wars?
- The Strait of Hormuz: A Geopolitical ChokepointReferenceCited in:What Is the Strait of Hormuz?
Federation of American Scientists(4 sources)
- Status of World Nuclear ForcesAnalysis(2026-01-01)
- Status of World Nuclear ForcesAnalysis(2025-03-01)Cited in:India vs Pakistan Nuclear Weapons: A Complete 2026 Comparison,Iran vs North Korea Nuclear Programs: A Complete 2026 Comparison,Iran War Timeline 2026: Escalation From Talks to Open Conflict,Russia vs US Nuclear Forces: 2026 Strategic Comparison,US Military vs Iran Military: A Complete 2026 Comparison,How Many Nukes Would It Take to Destroy the World?,Who Has the Most Nuclear Weapons? Complete 2025 Ranking,China Nuclear Forces and Military Power Profile,France Nuclear Forces and Military Power Profile,India Nuclear Forces and Military Power Profile,Israel Nuclear Forces and Military Power Profile,North Korea Nuclear Forces and Military Power Profile,Pakistan Nuclear Forces and Military Power Profile,Russia Nuclear Forces and Military Power Profile,United Kingdom Nuclear Forces and Military Power Profile,United States Nuclear Forces and Military Power Profile
- The Physics of Nuclear WeaponsAnalysis
- The Superbomb: Soviet Testing and the RDS-220Analysis
Iran War Updates(4 sources)
- Trump Promises More Strikes on Iran as U.S. Adds to Forces in MideastReference(2026-03-02)
- Is Iran Going to Attack the US Today?Reference(2026-03-01)Cited in:Geneva Talks Collapse After US Enrichment Ultimatum,Iran Closes Strait of Hormuz: 20% of Global Oil Supply Disrupted,Iran-Linked Cyber Campaign Hit Critical Infrastructure Before War,Iran Proxy Network Escalates Across the Middle East,Iran Retaliatory Strikes Hit US Bases Across Gulf Region,Nuclear Threat Assessment: Where the Iran Crisis Goes From Here
- Iran Confirms Supreme Leader Khamenei Is DeadReference(2026-02-28)
- US, Israel Attack Iran Live: Trump Vows to Continue Attacks, Avenge TroopsReference(2026-02-28)
Nuclear Threat Initiative(4 sources)
- Nuclear Threat Initiative: India / PakistanAnalysis(2025-01-01)
- North Korea Nuclear OverviewAnalysis(2025-01-01)
- Iran Nuclear OverviewAnalysis(2025-01-01)
- International Atomic Energy AgencyAnalysis
Supreme Court of the United States(4 sources)
- Rules of the Supreme Court of the United StatesOfficialPrimary Doc(2026-03-04)
- Supreme Court Monthly Argument Calendar (March 2026)OfficialPrimary Doc(2026-03-04)
- Supreme Court Docket SearchOfficial(2026-03-04)
- Supreme Court Oral Argument Calendars and ListsOfficial(2026-03-04)
U.S. Department of Defense(4 sources)
- 2022 Nuclear Posture ReviewOfficialPrimary Doc(2022-10-27)
- America's Nuclear TriadOfficial(2025-01-01)
- Deterrence and AssuranceOfficial(2025-01-01)
- Department of Defense Releases its 2022 Strategic ReviewsOfficial(2022-10-27)
U.S. National Archives(4 sources)
- National Archives: Electoral College Key DatesOfficial(2026-03-04)
- Executive Order 13526 (Classified National Security Information)Official(2026-03-04)
- ISOO Annual ReportsOfficial(2026-03-04)
- National Archives Declassification PortalOfficial(2026-03-04)
U.S. Nuclear Regulatory Commission(4 sources)
- Frequently Asked Questions About Potassium IodideOfficial(2024-09-06)
- Backgrounder on Dirty BombsOfficial(2023-12-06)
- Backgrounder on Radioactive WasteOfficial(2023-01-01)
- Use of Potassium IodideOfficial(2021-02-03)
Arms Control Association(3 sources)
- Iran Nuclear FactsheetAnalysis(2025-01-01)
- IAEA Safeguards OverviewAnalysis
- Iran Nuclear OverviewAnalysis
Congressional Research Service(3 sources)
- Iran's Nuclear Program: StatusAnalysisPrimary Doc(2025-01-01)
- Iran's Nuclear Program: StatusOfficial(2025-01-01)
- Authorization for Use of Military Force: Issues and ChallengesOfficial
NBC News(3 sources)
- Live updates: U.S. shuts embassies in Saudi Arabia, Kuwait after drone attacksReporting(2026-03-03)
- 6 U.S. service members killed since start of warReporting(2026-03-02)Cited in:Did Iran Attack the U.S. Today?,Iran Crisis 2026 vs 2019 Tensions: What's Different This Time,Is This Like the Cuban Missile Crisis? Comparing 1962 and 2026,Iran War vs Iraq War: How the 2026 and 2003 Conflicts Compare,Trump Vows More Iran Strikes as US Expands Mideast Forces,Trump Says 'Too Late' for Iran Talks as Israel Hits Tehran
- Israel-Iran live updates: US forces hit in Bahrain, Kuwait as Iran retaliatesReporting(2026-02-28)Cited in:Did Iran Attack the U.S. Today?
NPR(3 sources)
- What Operation Epic Fury means for the US, Iran, and beyondReporting(2026-03-02)
- Trump warns Iran not to retaliate after Ayatollah Ali Khamenei is killedReporting(2026-03-01)
- Trump Defends Iran Strikes, Offers Objectives for Military OperationReference(2026-03-02)
SIPRI(3 sources)
- SIPRI Military Expenditure DatabaseAnalysis(2025-06-01)
- Nuclear Proliferation in the Middle EastAnalysis(2025-06-01)
- SIPRI Yearbook 2025: World Nuclear ForcesAnalysis(2025-06-01)Cited in:China Nuclear Forces and Military Power Profile,France Nuclear Forces and Military Power Profile,India Nuclear Forces and Military Power Profile,Iran Nuclear Program and Military Power Profile,Israel Nuclear Forces and Military Power Profile,North Korea Nuclear Forces and Military Power Profile,Pakistan Nuclear Forces and Military Power Profile,Russia Nuclear Forces and Military Power Profile,United Kingdom Nuclear Forces and Military Power Profile,United States Nuclear Forces and Military Power Profile
U.S. Department of State(3 sources)
- New START TreatyOfficialPrimary Doc(2023-02-01)
- New START Treaty Text and ProtocolOfficialPrimary Doc
- State Department: Security Cooperation with Allies and PartnersOfficial(2026-03-04)
U.S. Environmental Protection Agency(3 sources)
- Protective Action Guides and Planning GuidanceOfficial(2025-01-01)
- Radiation BasicsOfficial(2024-01-01)
- Protective Action Guides (PAG) ManualOfficial(2017-01-11)
World Health Organization(3 sources)
- Radiation and HealthReference(2024-08-29)
- Iodine Thyroid BlockingReference(2017-01-01)
- Health Effects of the Chernobyl AccidentReference(2006-04-01)
Bloomberg(2 sources)
- Israel Struck Iran Assembly of Experts While They Met, Kan SaysReporting(2026-03-03)
- Iran Strikes: How Trump's Team Shifted From Diplomacy to Operation Epic FuryReporting(2026-03-01)
CBS News(2 sources)
- U.S. death toll in Iran war rises to 6 as Trump says campaign could last 5 weeksReporting(2026-03-03)
- Israel, US attack Iran — Trump says 'major combat operations' underwayReporting(2026-02-28)Cited in:Did Iran Attack the U.S. Today?
CNN(2 sources)
Euronews(2 sources)
- What is Iran's Assembly of Experts and who will succeed Khamenei?Reporting(2026-03-03)
- Trump says Iran war could last four to five weeks but could go far longerReporting(2026-03-03)
Federal Emergency Management Agency(2 sources)
- Planning Guidance for Response to a Nuclear DetonationOfficialPrimary Doc(2022-06-01)
- Building Design for Homeland Security: FEMA 426OfficialPrimary Doc(2003-12-01)
FOIA.gov(2 sources)
- FOIA Statute (5 U.S.C. § 552)Official(2026-03-04)
- FOIA.gov: How to Make a FOIA RequestOfficial(2026-03-04)
Harvard University Press(2 sources)
- Essence of Decision: Explaining the Cuban Missile CrisisReference
- The Bomb: A LifeReference
Journal of Geophysical Research(2 sources)
National Security Archive, George Washington University(2 sources)
- Tsar Bomba: Testing the Soviet Union's Most Powerful Nuclear WeaponReference(2017-10-27)
- Able Archer 83: The Secret History of the NATO Exercise That Almost Triggered Nuclear WarReference(2013-11-07)
Pew Research Center(2 sources)
- Pew Research Center Methods Fact SheetReference(2026-03-04)
- Pew Research: How Different Weighting Methods WorkReference(2018-01-26)
Stockholm International Peace Research Institute(2 sources)
- SIPRI Nuclear Arsenals DatabaseAnalysis(2026-01-15)
- SIPRI Yearbook 2025: World Nuclear ForcesAnalysis(2025-06-01)Cited in:India vs Pakistan Nuclear Weapons: A Complete 2026 Comparison,Iran vs North Korea Nuclear Programs: A Complete 2026 Comparison,New START Treaty Expiration 2026: What Changes Now,Russia vs US Nuclear Forces: 2026 Strategic Comparison,How Many Nukes Would It Take to Destroy the World?,Nuclear Triad Explained: Structure, Purpose, and Tradeoffs,Who Has the Most Nuclear Weapons? Complete 2025 Ranking
U.S. Courts(2 sources)
- PACER Service CenterOfficial(2026-03-04)
- U.S. Courts: Electronic Filing (CM/ECF)Official(2026-03-04)
U.S. Department of Justice(2 sources)
- DOJ Guide to the Freedom of Information ActOfficialPrimary Doc(2026-03-04)
- DOJ: National Voter Registration Act of 1993OfficialPrimary Doc(2026-03-04)
Union of Concerned Scientists(2 sources)
- Missile Defense: A Technical EvaluationReference(2024-01-01)
- Nuclear Deterrence - Union of Concerned ScientistsReferenceCited in:How Nuclear Deterrence Works
United Nations Office for Disarmament Affairs(2 sources)
- Treaty on the Non-Proliferation of Nuclear Weapons (NPT)OfficialPrimary Doc(2024-01-01)
- Nuclear Disarmament OverviewReference
US Department of Defense(2 sources)
- Ballistic Missile Defense ReviewOfficial(2024-01-01)
- Effects of Nuclear Weapons (Glasstone & Dolan)Reference
US Department of Energy(2 sources)
ABC News/FiveThirtyEight(1 source)
- FiveThirtyEight Polling AveragesReference(2026-03-04)
Air Force Magazine(1 source)
- Nagasaki: The Last BombReferencePrimary Doc
Alfred A. Knopf(1 source)
- Andrei Sakharov — MemoirsReference
Alfred A. Knopf / Kai Bird & Martin Sherwin(1 source)
- American Prometheus: The Triumph and Tragedy of J. Robert OppenheimerReference(2005-04-05)
AP-NORC(1 source)
- AP VoteCast Project OverviewReference(2026-03-04)
Atomic Heritage Foundation / National Museum of Nuclear Science and History(1 source)
BBC(1 source)
- Israel-Iran conflict explainerReporting(2025-06-19)
BBC News Live(1 source)
- Trump says 'there will likely be more' US deaths as Iran strikes continue until 'all' goals achievedReporting(Updated 2026-03-02)
Breaking Defense(1 source)
- How tanking, airlift could be strained by Iran opsReference(2026-03-03)
Brennan Center for Justice(1 source)
- The 2001 AUMF: A Brief OverviewReferencePrimary Doc
Britannica(1 source)
- Ali Khamenei | Biography, Title, History, Successor, Son, & FactsReference(2026-03-01)
Brookings Institution(1 source)
- The Nuclear Triad: Should It Stay, or Should It Go?Analysis(2017-02-16)
Brown University Watson Institute(1 source)
- Costs of War ProjectReference
Carnegie Endowment for International Peace(1 source)
- The Logic of Nuclear DeterrenceAnalysis
CBC News(1 source)
- Israel vs. Iran Military CapabilitiesReporting(2024-10-01)
CENTCOM(1 source)
- US Central Command StatementOfficialPrimary Doc(2026-03-01)
Center for Strategic and International Studies(1 source)
CISA(1 source)
- Iran Cyber Threat Overview and AdvisoriesOfficial(2026-02-26)
Clingendael Institute(1 source)
Committee for the Compilation of Materials on Damage Caused by the Atomic Bombs(1 source)
Congressional Budget Office(1 source)
- Projected Costs of U.S. Nuclear Forces, 2023 to 2032Official(2023-07-24)
CSIS(1 source)
- Operation Epic Fury and the Remnants of Iran's Nuclear ProgramAnalysis(2026-03-02)
Cybersecurity and Infrastructure Security Agency(1 source)
- Radiological Dispersal DevicesOfficial(2025-01-01)
Da Capo Press(1 source)
Dutton / Penguin Random House(1 source)
- Nuclear War: A ScenarioReference
EMP Commission / U.S. Congress(1 source)
- Report of the Commission to Assess the Threat to the United States from Electromagnetic Pulse (EMP) AttackOfficialPrimary Doc(2008-04-01)
Federal Election Commission(1 source)
- 2026 Congressional Primary Dates (FEC PDF)OfficialPrimary Doc(2026-03-04)
Federal Emergency Management Agency (FEMA)(1 source)
- Planning Guidance for Response to a Nuclear DetonationOfficialPrimary Doc(2022-06-01)
Federal Register(1 source)
- Federal Register: Executive OrdersOfficial(2026-03-04)
FEMA(1 source)
- Planning Guidance for Response to a Nuclear DetonationOfficialPrimary Doc(2022-06-01)
Foreign Affairs(1 source)
- If Iran Gets the BombReference(2024-01-01)
Fortune(1 source)
- Meet Mojtaba Khamenei, 'the power behind the robes'Reference(2026-03-04)
Fox News(1 source)
Free Law Project(1 source)
- RECAP ProjectReference(2026-03-04)
Gallup(1 source)
- How Does Gallup Polling Work?Reference(2026-03-04)
GAO(1 source)
- GAO Appropriations Law ResourcesOfficial(2026-03-04)
HSToday(1 source)
International Institute for Strategic Studies(1 source)
- Iran's Military CapabilitiesReference(2025-01-01)
Iran International(1 source)
- Despite denials, Khamenei drives Iran's economyReference(2025-03-22)
Israel Hayom(1 source)
- Israel strikes Iran's Assembly of Experts in QomReference(2026-03-03)
Jerusalem Post(1 source)
Jewish Virtual Library(1 source)
- Ali KhameneiReference(2026-03-01)
Knopf(1 source)
Lawrence Livermore National Laboratory / DHS(1 source)
- Key Response Planning Factors for the Aftermath of Nuclear TerrorismOfficial(2009-11-01)
Los Alamos National Laboratory(1 source)
Merck Manual Professional Edition(1 source)
- Acute Radiation SyndromeReference(2025-01-01)
Middle East Eye(1 source)
- Israeli-US strikes hit building of assembly choosing new Iran supreme leaderReference(2026-03-03)
Military.com(1 source)
- War in the Mideast Widens as Trump Says Strikes on Iran Could Last Several WeeksReporting(2026-03-02)
Ministry of External Affairs, Government of India(1 source)
- Cabinet Committee on Security Review of Nuclear DoctrineReferencePrimary Doc(2003-01-04)
Ministry of External Affairs, India(1 source)
- India's Nuclear DoctrineReferencePrimary Doc(2003-01-04)
Ministry of Foreign Affairs of the People's Republic of China(1 source)
- No-first-use of Nuclear Weapons InitiativeReference(2024-07-23)
Missile Defense Agency(1 source)
- GMD Intercept Test HistoryOfficial(2025-01-01)
Morocco World News(1 source)
National Constitution Center(1 source)
- The War Powers Resolution After Fifty YearsReferencePrimary Doc
National Nuclear Security Administration(1 source)
- Nuclear Command, Control, and CommunicationsOfficial(2024-01-01)
NATO(1 source)
- NATO Strategic Concept 2022Official(2022-06-29)
Norwich University(1 source)
- Khamenei's Nuclear Fatwa: Religious Ruling or Political Strategy?Reference(2024-01-01)
Nuclear Threat Initiative (NTI)(1 source)
- Soviet Nuclear TestingAnalysis
Nuclear Weapon Archive / Carey Sublette(1 source)
NuclearDarkness.org / Steven Starr(1 source)
NukeClock(1 source)
- What Is Nuclear Fallout? Radiation Effects and Survival BasicsReference(2026-02-27)
NUKEMAP / Alex Wellerstein, Stevens Institute of Technology(1 source)
- Modern nuclear weapons effects dataReference
Oak Ridge National Laboratory / U.S. DOE(1 source)
- High-Altitude Electromagnetic Pulse and the Bulk-Power SystemOfficial(2010-01-01)
Penguin Press(1 source)
Physicians for Social Responsibility(1 source)
- Nuclear Famine: A Billion People at RiskReferencePrimary Doc
President's Foreign Intelligence Advisory Board (PFIAB)(1 source)
- The Soviet War ScareAnalysisPrimary Doc(1990-02-15)
Radiation Effects Research Foundation (RERF)(1 source)
RAND(1 source)
- The Israel-Iran Détente Won't LastAnalysis(2026-01-26)
RAND Corporation(1 source)
- The Evolution of Nuclear StrategyAnalysis(2020-01-01)
Ready.gov(1 source)
- Nuclear ExplosionOfficial(2025-01-01)Cited in:Dirty Bomb vs Nuclear Bomb: Key Differences,Does Duck and Cover Work? What Physics Says,How Far From Nuclear Blast Is Safe? Real Distance Guide,Nuclear EMP Effects on Electronics: What Fails First,Nuclear Shelter Checklist: 24-Hour Plan,Radiation Sickness Symptoms Timeline: Stages,What Is the Nuclear Football? Process and Limits,What to Do During Nuclear Alert: Fast Checklist
Ready.gov / FEMA(1 source)
- Preparing for a Nuclear ExplosionOfficialPrimary Doc(2020-03-01)
Reuters via SWI swissinfo.ch(1 source)
RFE/RL(1 source)
- Trump Says 'Too Late' For Talk As US, Israeli Continue Strikes And Iran Fires BackReference(2026-03-03)
RTE(1 source)
- Trump says 'too late' for Iran talks as strikes continueReporting(2026-03-03)
RUSI(1 source)
- Why Israel and Iran had Decided to Avoid a Long WarAnalysis(2025-07-07)
Science Direct / Ecological Economics(1 source)
- A National Pragmatic Safety Limit for Nuclear Weapon QuantitiesReference(2018-10-01)
Science Magazine (TTAPS Study)(1 source)
- Environmental Consequences of Nuclear WarReference(1983-12-23)
Simon & Schuster(1 source)
Simon & Schuster / Richard Rhodes(1 source)
- The Making of the Atomic BombReference(1986-01-01)
Smithsonian Magazine(1 source)
- Hiroshima: A Soldier's StoryReference
Stanford University Press(1 source)
The Conversation(1 source)
- Ayatollah Ali Khamenei ruled Iran with defiance and brutality for 36 yearsReference(2026-03-01)
The Guardian(1 source)
- Israel attacks Iran as blasts heard in Tehran — live updatesReporting(2026-02-28)Cited in:Did Iran Attack the U.S. Today?
The Soufan Center(1 source)
- Iran's Leadership Transition in the Shadow of War with the U.S. and IsraelAnalysis(2026-03-01)
The Times of Israel(1 source)
- Iran's Ali Hosseini Khamenei, who based brutal rule on fiery hostility to US and Israel, dead at 86ReportingPrimary Doc(2026-02-28)
The White House(1 source)
- Peace Through Strength: President Trump Launches Operation Epic FuryOfficial(2026-03-01)
Times of Israel(1 source)
- Trump: Iranians want to talk, I said it's too late!Reporting(2026-03-03)
U.S. Congress(1 source)
U.S. Defense Security Cooperation Agency(1 source)
- DSCA Major Arms Sales NotificationsOfficial(2026-03-04)
U.S. Department of Defense / Samuel Glasstone & Philip J. Dolan(1 source)
- The Effects of Nuclear Weapons (Third Edition)Official(1977-01-01)
U.S. Department of Energy / OSTI(1 source)
- The Effects of Nuclear WeaponsOfficial(1977-01-01)
U.S. Department of Health and Human Services(1 source)
- Nuclear Explosion: Information for CliniciansOfficial(2024-07-24)
U.S. Election Assistance Commission(1 source)
- EAC Studies and ReportsOfficial(2026-03-04)
U.S. Food and Drug Administration(1 source)
- Potassium Iodide (KI)Official(2024-01-01)
U.S. House of Representatives(1 source)
- House Permanent Select Committee on IntelligenceOfficial(2026-03-04)
U.S. Treasury OFAC(1 source)
- OFAC Sanctions Programs and Country InformationOfficial(2026-03-04)Cited in:How IEEPA Sanctions Authority Works
United Against Nuclear Iran(1 source)
- Supreme Leader Ali Khamenei: An IntroductionReference(2026-03-01)
United Nations(1 source)
- Treaty on the Non-Proliferation of Nuclear WeaponsOfficialPrimary Doc
United Nations Scientific Committee on the Effects of Atomic Radiation(1 source)
- Sources and Effects of Ionizing Radiation (UNSCEAR 2020)Reference(2020-01-01)
US Central Command(1 source)
- US Central Command OperationsOfficial(2026-03-01)
US Central Intelligence Agency(1 source)
US Congress(1 source)
- Authorization for Use of Military Force Against Iraq Resolution of 2002OfficialPrimary Doc
US Department of Defense / Defense Threat Reduction Agency(1 source)
- Effects of Nuclear Weapons (Glasstone & Dolan, 3rd ed.)OfficialPrimary Doc(1977-01-01)
US Department of Defense / Department of Energy(1 source)
- The Effects of Nuclear Weapons (3rd Edition)Reference(1977-01-01)
US Department of Energy / Office of Scientific and Technical Information(1 source)
US Department of State Office of the Historian(1 source)
US Energy Information Administration(1 source)
- Strait of Hormuz ChokepointOfficial(2019-06-20)
US Missile Defense Agency(1 source)
- Missile Defense Agency Fact SheetsOfficial(2025-01-01)
US Strategic Bombing Survey / Truman Library(1 source)
- The Effects of the Atomic Bombs on Hiroshima and NagasakiOfficial(1946-06-19)
USA Today(1 source)
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USNI News(1 source)
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War Power Israel(1 source)
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White House OMB(1 source)
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About Our Sources
NukeClock relies on publicly available data from established institutions including the Stockholm International Peace Research Institute (SIPRI), the Federation of American Scientists (FAS), the Bulletin of the Atomic Scientists, Global Firepower, and major news organizations. All nuclear warhead figures, military data, and conflict assessments are sourced from these organizations and cited inline throughout our content. If you believe a source is incorrect or outdated, please contact us.
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