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U.S. Energy Secretary Chris Wright said the nuclear testing ordered by President Trump will not involve nuclear blasts, describing upcoming work as systems checks and 'noncritical' explosions to verify other parts of weapons. He told Fox News that Americans should not expect mushroom clouds, even as Trump urged the Pentagon to step up testing 'on an equal basis' with other countries. The United States has not conducted an explosive test since 1992, amid a global norm against detonations. Testing tied to Washington's warhead replacement program, estimated at $1.7 trillion, is underway and will remain nonnuclear.

Prepared by Lauren Mitchell and reviewed by editorial team.