4-1Unit4Nuclear ThreatIn this unit you will learn:ONuclear weapon detonation characteristics and effectsOProtective measures against effectsOExposure rate determination after a detonationINTRODUCTIONThe end of the cold war and the dissolution of the Soviet empire has changed, not eliminated, the nuclearthreat to the United States. Other countries who previously had the weapons but did not have weapondelivery vehicles able to reach the United States now have the ability to do so. Improvised nuclear devices(IND) or radioactive disperson devices (RRD) (radioactive material placed inside a conventional explosivedevice) are becoming increasingly possible. These IND weapons are within a terrorist’s ability to employ.The threat of a terrorist using weapons of mass destruction is increasing. A critical priority for the UnitedStates is to stem the proliferation of nuclear weapons and their delivery systems. Efforts are being made toaccount for and control all existing nuclear weapons and radioactive material worldwide.
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Nuclear weapon, nuclear detonation, nuclear weapon detonation