The allegations were leveled by U.S. officials late last week. Arms control experts worry that norms against nuclear testing ...

For the first time since the end of the Cold War, European capitals are discussing how to develop their own deterrent.

Moscow reiterates willingness to adhere to expired nuclear weapons treaty, "as long as the United States does not exceed the ...

Iran and the United States will hold a second round of talks over Tehran’s nuclear program next week, the Swiss Foreign ...

A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

The United States on Friday accused China of carrying out a secret nuclear test in 2020 as the Trump administration calls for ...

The head of Canada's military space division says the country "should absolutely be" concerned about Russia's potential capabilities amid global fears the Kremlin is considering putting nuclear ...

U.S. President Barack Obama, left, and his Russian counterpart Dmitry Medvedev, right, shake hands at a news conference ...

The last remaining nuclear treaty between the U.S. and Russia has expired, ending decades of arms control between the two countries with the largest nuclear arsenals.

The collapse of 1980s treaties shows the limits of arms control.

Since the collapse of the old Soviet Union, Russia has cut a substantially diminished figure on the international stage.

Workers that build and maintain the UK's nuclear weapons have voted to strike over a planned restructuring of the ...