In Poland, US president reassures eastern flank NATO allies that the United States will remain by their side, vows that military alliance's mutual-defense pact is 'sacred'

Parliament's lower house ratifies partial withdrawal from New START treaty; deputy head of Russia's Security Council threatens nuclear strike if pushed by West

Visiting Kyiv, Yuli Edelstein and Ze'ev Elkin call for government to quit sitting on fence, saying it should instead offer unequivocal support for war-torn country

President repeats unfounded claim that his forces are fighting a 'neo-Nazi regime' in Ukraine, insists sanctions over invasion 'won't succeed,' vows to continue war

As death toll of war in Ukraine rises, ordinary civilians are facing growing repression at home as families are ripped apart by mobilization

In address to Munich Security Conference, Ukrainian president issues fresh plea for military support, says he hopes Israeli decision to hold back system only 'temporary'

Investigators find 'strong indications' Russian president endorsed giving separatists in Ukraine weapon that hit Malaysian plane in 2014, but probe to end as 'all leads exhausted'

Ex-PM says Russian president also agreed not to push for Kyiv's disarmament; former premier says everything he did was in coordination with US

After Netanyahu tells CNN he is considering supplying military aid to Kyiv, Kremlin threatens weapons will be targeted and asserts move will lead to 'escalation of this crisis'

'I don't want to hurt you, but with a missile it would only take a minute,' Boris Johnson cites Putin as saying; Johnson has emerged as one of Kyiv's most impassioned backers