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

Putin's goals in Ukraine remain the same: weakening Ukraine's ties to NATO, hindering Ukrainian nationalism and territorial ...

Senior Russian security official Dmitry Medvedev said on Tuesday that if the West supplied nuclear weapons to Ukraine then ...

The U.S. decision to allow Ukraine to fire American weapons deeper into Russia has not increased the risk of a nuclear attack ...

The use of an experimental missile against Dnipro was designed to send a message to Biden that Moscow has no intention of ...

World leaders and analysts expressed doubts that the change to Russia's nuclear doctrine amounted to much more than a new and ...

Russia’s decision to fire a ballistic missile at Ukraine on Nov. 21 may be considered a “mock nuclear strike,” expert Robert ...

Ukrainian investigators allowed journalists to view remains of an intermediate-range ballistic missile used by Russia on the ...

It would be "insane" for the West to give Ukraine nuclear weapons, Russia's foreign ministry has said, in response to reports ...

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

Putin lowered the bar for a nuclear attack after the US lifted a ban on Ukraine using long-range missiles. Ukraine carried ...