The world passed a nuclear milestone this week. And, perhaps surprisingly given the recent run of saber-rattling from the likes of Russia and the United States, it’s a positive one.

President Donald Trump ordered the Department of War to resume testing nuclear weapons “on an equal basis” with Russia and China on Thursday, a practice halted by the U.S. in 1992. The announcement ...

President Trump explained the order by saying other, unnamed nations were testing their own nuclear weapons, even though no country has tested since 2017. By David E. Sanger and William J. Broad David ...

Decision follows China's expansion of nuclear stockpile Kremlin reacts cautiously to Trump's nuclear remarks Russia's recent nuclear tests include Poseidon super torpedo Pentagon expects Chinese ...

Mr. Hennigan writes about national security issues for Times Opinion. Hours before meeting President Xi Jinping of China on Thursday, President Trump made a confounding proclamation: He wanted the ...