The use of weapons, missiles and munitions supplied by Ukraine's Western allies to strike Russian territory has previously been seen as a major red line for Russian President Vladimir Putin.

A spat between President Donald Trump and Ukrainian President Volodymyr Zelenskyy has come as a windfall for the Kremlin, ...

President Joe Biden lifted restrictions on Ukraine using U.S.-provided long-range ... But Russia has "set out 'red lines' before," the BBC said, and many were "crossed without triggering a direct ...

"When the conscription campaign for the Red Army was launched in Western Ukraine, OUN and UPA members ... The memo sheds light on several instances like this occurring in various military units.

As we've been reporting today, local authorities say at least 11 people have died after a Russian strike on the Ukrainian town of ... being lit up by flashes of light and the sound of several ...