Ukraine tension: Biden says he thinks Putin will 'move in'

US President Joe Biden has said he thinks his Russian counterpart Vladimir Putin will "move in" on Ukraine but does not want "full-blown war".

He told a news conference Mr Putin would pay a "serious and dear price" for invading, but indicated a minor incursion might be treated differently.

The White House later stressed any Russian military move would be met with a swift, severe response from the West.

Russia has some 100,000 troops near the border but denies planning an invasion.