Although President Trump has claimed Iran was weeks away from developing a nuclear weapon, much more work was needed for the country to do so ...

The United States is to resume nuclear weapons testing “immediately”, Donald Trump has announced, raising fears of renewed proliferation between the world’s two biggest stockpiles of atomic weaponry.

President Donald Trump feared Iran's nuclear weapon capabilities. How safe would Pennsylvania and Delaware be during nuclear ...

The last remaining bilateral treaty between the United States and Russia limiting strategic nuclear arms expires on Thursday, leaving the two countries with no control over their nuclear arsenals. The ...

In discussing his reasoning for launching U.S. airstrikes on Iran, President Donald Trump said, "An Iranian regime armed with long-range missiles and nuclear weapons would be a dire threat to every ...

In what would be a major shift in a decades-old American policy against global nuclear proliferation, President Trump says he has directed the Pentagon to “start testing” U.S. nuclear weapons “on an ...

President Donald Trump said Wednesday he had instructed the Defense Department to “immediately” start testing nuclear weapons "on an equal basis" with other nations. “Because of other countries ...

There was no indication the U.S. would start detonating warheads, but the president offered few details about what seemed to be a significant shift in U.S. policy. He made the announcement on social ...

Add Yahoo as a preferred source to see more of our stories on Google. The last remaining bilateral treaty between the United States and Russia limiting strategic nuclear arms expires on Thursday, ...