By Trevor Hunnicutt, Ismail Shakil and Kanishka Singh BUSAN, South Korea (Reuters) -President Donald Trump ordered the U.S.

ABC News' Luis Martinez and contributor Mick Mulroy discuss President Donald Trump's order to put the U.S on equal basis with ...

Experts say there are roughly 12,241 nuclear weapons across the world, with just over 9,600 thought to be operational.

President Trump has directed the Pentagon to start testing nuclear weapons “on an equal basis” with other countries. MSNBC ...

President Trump said he’s directed the Pentagon to “immediately” resume nuclear weapons testing for the first time since 1992 ...

President Donald Trump has appeared to suggest on social media that the U.S. resume testing nuclear weapons for the first ...

Just minutes before he was scheduled to meet President Xi Jinping of China, the president threatened on social media to ...

U.S. President Donald Trump ordered the U.S. military on Thursday to immediately resume testing nuclear weapons after a gap ...

Trump said the U.S. will test nuclear weapons “on an equal basis” with Russia and China. None of the three countries has ...

Trump's announcement breaks with more than three decades of policy. The last time the United States tested a nuclear weapon ...

The U.S. voluntarily halted nuclear explosive testing in 1992, though it has the ability to restart tests at a site in Nevada ...

The president said he wanted testing to occur “on an equal basis” with Russia and China, just before he met his Chinese ...