Sullivan made his remarks when questioned about a New York Times article last month that said some unidentified Western ...

The United States is not considering returning to Ukraine the nuclear weapons the country previously agreed to give up under ...

Providing Ukraine with nuclear weapons, which it willingly gave up in the early 1990s, is not considered part of the United ...

Discussion in the West about arming Ukraine with nuclear weapons is "absolutely irresponsible", Kremlin spokesman Dmitry ...

Three experts spoke to Newsweek about the possibility of Moscow firing nuclear weapons into Ukraine as tensions escalate.

The United States is not considering returning to Ukraine the nuclear weapons it gave up after the Soviet Union collapsed, ...

As conflict deepens, conservative commentators pointed to claims of U.S. officials discussing sending old weaponry to Ukraine ...

Volodymyr Zelensky has called on the US to convince “sceptics” in Europe that Ukraine should be invited to join Nato. For the ...

Russia is closing in on a key town in Ukraine's defensive line made vulnerable by the loss of Vuhledar, the British defence ...

Russian President Vladimir Putin issued a warning to the United States on Tuesday, lowering the threshold for a nuclear ...

Ukraine’s top diplomat warned that the United States cannot afford to look weak in the face of increased threats from the ...