The U.S. decision to allow Ukraine to fire American weapons deeper into Russia has not increased the risk of a nuclear attack, which is unlikely, despite Russian President Vladimir Putin's ...

Russia on Wednesday warned the U.S. to stop what it said was a “spiral of escalation” over Ukraine as Washington moves to ...

The recent strike on the Yuzhmash missile-producing plant in Ukraine demonstrated Russia’s "real military capability", a nuclear nonproliferation expert at the Middlebury Institute for International S ...