Skip to main content
NukeClock

Explainers

Plain-language guides to the concepts behind nuclear risk — from how the Doomsday Clock works and what nuclear deterrence means in practice, to the legal frameworks governing military force and the role of proxy wars in escalation dynamics.

Each explainer is designed to give readers the background needed to understand the current Iran nuclear crisis and broader global security landscape. No prior expertise required — just clear, source-backed explanations of the terms, doctrines, and strategies that shape the world's most consequential decisions.

Does Duck and Cover Work? What Physics Says

Does duck and cover work in a nuclear attack? It can reduce blast injuries, but only when paired with immediate indoor shelter and fallout protection.

PreparednessCivil DefenseNuclear RiskRadiationPublic Safety

How Far From Nuclear Blast Is Safe? Real Distance Guide

How far from nuclear blast is safe depends on yield, shielding, and fallout. Use practical distance bands and shelter rules to make faster, safer decisions.

PreparednessCivil DefenseRadiationNuclear RiskPublic Safety

Nuclear EMP Effects on Electronics: What Fails First

Nuclear EMP effects on electronics can cascade into power and communications outages. Learn what fails first, what survives, and how to harden essentials.

Nuclear WeaponsNuclear RiskMilitaryPublic HealthDeterrence

Nuclear Triad Explained: Structure, Purpose, and Tradeoffs

Nuclear triad explained: how land, sea, and air nuclear forces work, why states keep all three legs, and what this means for deterrence risk in 2026.

Nuclear WeaponsDeterrenceMilitaryArms ControlStrategy

No First Use Nuclear Policy: Meaning, Limits, and Risk

No first use nuclear policy lowers first-strike pressure when doctrine and posture align. Compare NFU states, loopholes, and real crisis effects.

Nuclear WeaponsDeterrenceArms ControlPublic HealthPolicy

Radiation Sickness Symptoms Timeline: Stages

Radiation sickness symptoms timeline explained: onset windows, stage-by-stage signs, dose ranges, and the treatment decisions that most affect survival.

RadiationPublic HealthPreparednessNuclear RiskCivil Defense

What to Do During Nuclear Alert: Fast Checklist

What to do during nuclear alert: shelter fast, cut fallout dose, and follow a practical 24-hour protocol for safer decisions at home, work, or school.

PreparednessCivil DefenseRadiationNuclear RiskPublic Safety

What Is the Nuclear Football? Process and Limits

What is the nuclear football? Learn what is inside, who carries it, how launch orders move, and what legal and operational limits apply.

Nuclear WeaponsUs PoliticsMilitaryStrategyPublic Safety

Dirty Bomb vs Nuclear Bomb: Key Differences

Dirty bomb vs nuclear bomb explained: hazard size, radiation risk, survival steps, and when to shelter or evacuate based on official guidance.

Nuclear RiskRadiationPreparednessPublic SafetyCivil Defense

Nuclear Shelter Checklist: 24-Hour Plan

Nuclear shelter checklist for the first 24 hours: room choice, supplies, timing, and fallout safety steps every household can apply now.

PreparednessCivil DefenseNuclear RiskRadiationPublic Safety