With the "full force of American power"
The US President has promised to protect his NATO allies with the "full force of American power", as tensions between Ukraine and Russia grow.
Joe Biden says he wants to pursue diplomatic talks - but believes an invasion spearheaded by the Kremlin "remains very much a possibility".
The 79 year-old says Russian claims that it has withdrawn some of its forces are still unverified.
Ukrainian MP Oleksii Goncharenko thinks it's time for the Kremlin to back down:
NATO's secretary general Jens Stoltenberg has been speaking as defence ministers meet in Brussels to discuss the crisis.
He says allies are still preparing for the worst:
Britain's Defense Secretary Ben Wallace thinks the situation in Eastern Europe is only ramping up: