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

Putin’s experimental missile carried dummy warheads, Kyiv says - Vladimir Putin has called the Oreshnik intermediate-range ...

Slovakia's Prime Minister Robert Fico announced he will visit Moscow on May 9 for the 80th anniversary of World War II ...

NATO Secretary-General Mark Rutte said on Wednesday that Ukraine is not in a strong enough position to begin negotiating an ...

The Kremlin fired a new intermediate-range ballistic missile at Ukraine on Thursday in response to Kyiv's use this week of ...

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

Russia launched a new non-nuclear ballistic missile with medium range on Ukraine’s Dnipro region on Thursday, Russia’s ...

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

President-elect Donald Trump has nominated Keith Kellogg, a former national security adviser and retired lieutenant general ...

Russian President Vladimir Putin said on Thursday that Russia fired a new, non-nuclear intermediate-range ballistic missile ...

Russian President Vladimir Putin said Thursday Russia hit a Ukrainian aerospace plant with an experimental hypersonic missile ...

The Pentagon confirmed Russia’s missile was a new, experimental type of intermediate-range missile based on its RS-26 ...