Trump instructs Pentagon to 'immediately' start testing US nuclear weapons. President Donald Trump announced on Oct. 29 that the United States will "immediately" resume nuclear weapons tests, a move he said is needed to ensure the country keeps up with its rival nuclear powers. In a Truth Social post, Trump touted progress made on nuclear weapons modernization during his first term. But he warned that China's nuclear weapons buildup will place Beijing's arsenal on equal footing with the United S