Scientific knowledge about the damaging effects of nuclear-weapons testing helped to end such tests. Those findings haven’t changed.

Though the country’s nuclear arsenal has undergone no explosive testing for decades, federal experts say it can reliably obliterate targets halfway around the globe. By William J. Broad President ...

Clashing accusations between Washington, Moscow, and Beijing threaten to unravel decades of restraint on nuclear explosions and put the global test-ban effort at risk.

The morning after President Donald Trump vowed to “start testing our Nuclear Weapons,” his pick to lead U.S. Strategic Command fielded questions from senators who wondered what the president meant and ...

"The jury remains out on whether the June 2020 event was a nuclear test or not. What is certain is that we are in a time of ...

VIENNA, Oct 30 (Reuters) - The head of the Comprehensive Nuclear-Test-Ban Treaty Organization, or CTBTO, said on Thursday that any explosive nuclear weapon test would be harmful for global ...

VIENNA (AP) — The United States and Russia have both recently threatened to resume nuclear testing, alarming the international community and jeopardizing a global norm against such tests. Experts say ...

Add Yahoo as a preferred source to see more of our stories on Google. President Donald Trump's order late Wednesday night for the U.S. to resume nuclear weapons tests has confounded officials and ...

This is read by an automated voice. Please report any issues or inconsistencies here. Trump says U.S. will restart nuclear testing, reversing decades of policy since the last test in 1992. Russia, ...

Just minutes before he was scheduled to meet President Xi Jinping of China, the president threatened on social media to resume nuclear testing “on an equal basis” with other countries. By David E.

Add Yahoo as a preferred source to see more of our stories on Google. An unarmed Trident II D5 missile launches from an Ohio-class ballistic missile submarine off the coast of Florida. The four ...

Speaking before the Conference on Disarmament in Geneva, Russian ambassador Gennady Gatilov decried US President Donald Trump ...