Russian attack on Ukraine still possible - Biden

A Russian attack on Ukraine "remains very much a possibility" but the human cost would be "immense", US President Joe Biden has said.

In remarks televised nationally, he said the US was ready to respond decisively to such a move.

Russia has amassed more than 100,000 troops near Ukraine's border, prompting fears of an invasion.

Its defence minister has said that some forces have now withdrawn. Mr Biden warned that this had not been verified.

"The Russian defence minister reported today that some military units are leaving their positions near Ukraine," Mr Biden said.

"That would be good, but we have not yet verified that. We have not yet verified the Russian military units are returning to their home bases.

"Indeed, our analysts indicate that they remain very much in a threatening position."

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