Nato vows to defend its entire territory after Russia attack

Nato secretary general Jens Stoltenberg speaks during a media conference at Nato headquarters in Brussels (Virginia Mayo/AP)

Nato secretary-general Jens Stoltenberg has warned that the military alliance would defend every inch of its territory should Russia attack a member country, as he condemned Moscow for launching a brutal act of war on Ukraine.

Russia launched a wide-ranging attack on its neighbour, hitting cities and bases with air strikes or shelling.