President Vladimir Putin said on Thursday that Russia would use all weapons at its disposal against Ukraine if Kyiv were to ...

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

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

Russia's Dmitry Medvedev warned of nuclear war if the U.S transfers nuclear weapons to Ukraine: "The consequences are obvious ...

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

Vladimir Putin has issued his latest threat following US media reports that the Biden administration had discussed returning ...

Lucy Easthope, an adviser in emergency management and response, gives Yahoo News insight into how prepared the UK really is ...

Russia will use all weapons at its disposal against Ukraine if it was to acquire nuclear arms, President Vladimir Putin ...

Vladimir Putin has warned that Moscow may order strikes on "decision-making centres" in Kyiv. Meanwhile, reports suggest ...

Russian President Vladimir Putin warned that Russia might target decision-making centers in Kyiv using its new hypersonic ...

The head of the Russian Orthodox Church Patriarch Kirill issued a rare rebuke to state officials over their nuclear threats ...

Newsweek used maps produced by Alex Wellerstein, a professor and historian of nuclear technology, to assess what the impact ...