Western allies have warned that Russia will be hit with an "unprecedented package of sanctions" if it invades Ukraine. Speaking last night after a virtual meeting between President Biden and European leaders including Boris Johnson, NATO's Secretary General Jens Stoltenberg said any further aggression by Moscow would have "severe costs". 8,500 US troops have been put on a heightened state of alert for a possible deployment to eastern Europe to boost NATO's presence.

Today’s Mishal Husain gets the latest from BBC correspondents Steve Rosenberg and Gabriel Gatehouse, and speaks to Sir Alex Younger, former Head of the UK’s secret intelligence service MI6.