"Putin's criminal war is getting closer to our borders," Polish Foreign Minister, Radosław Sikorski, said on Wednesday.

A Ukrainian soldier told BI that the thermonaric warheads have gotten bigger, while a first responder said Russia is using them more frequently.

The European Union failed for a second day to approve a new package of sanctions against Russia on Wednesday as Slovakia continued to seek concessions over gas supplies, four EU diplomats told Reuters.

President Donald Trump is downplaying the possibility of sending Ukraine long-range weapons as Kyiv awaits an injection of U.S. weaponry that it hopes will help it beat back an intensifying Russian air offensive.

A bipartisan bill in Congress would enable President Trump to slap "bone-crushing sanctions" on Russia, says Democratic Sen. Richard Blumenthal of Connecticut.

Germany and Spain issued arrest warrants for seven suspected members of a pro-Russian hacking group accused of carrying out cyber attacks against critical infrastructure, arms makers, power companies and public authorities.

Flight data showed how American and British reconnaissance aircraft flew from England toward Russia on Monday.

Trump makes major statement on Russia after announcing U.S. sending missiles to help Ukraine. Here's what to know and what he said about Putin

Japan is facing its most severe security environment since World War II as three potential adversaries in East Asia – China, Russia and North Korea – ramp up military activities in the region, the country’s defense minister said Tuesday.