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NNSA furloughed 80% amid shutdown; manages US nuclear arsenal of 5,177 warheads, including 1,770 deployed.

Stories involving National Nuclear Security Administration

Chernobyl Shield Severely Damaged

As of December 2025, the International Atomic Energy Agency (IAEA) confirmed that the New Safe Confinement (NSC) steel shield at Chernobyl lost its primary safety functions after a Russian drone strike in February 2025. While load-bearing structures remain intact, comprehensive repairs are essential to prevent further degradation and ensure long-term nuclear safety amid ongoing Ukraine-Russia conflict.