Ukraine tensions: US says Russia invasion could begin any day

The US has warned that Russia could invade Ukraine "at any time" and American citizens should leave immediately. The White House said an invasion could start with aerial bombing that would make departures difficult and endanger civilians. Moscow has repeatedly denied any plans to invade Ukraine despite massing more than 100,000 troops near the border.

Also in the programme: Protests continue in the Canadian province of Ontario despite an injunction that has come into force. And we hear the latest from day eight of the Winter Olympics in Beijing.

Julian Worricker has two guests to discuss these and the day's other stories. Joanna Chiu is a Canadian author and senior journalist for the Toronto Star. Carlos Lopes is a professor at the Mandela School of Public Governance at the University of Cape Town and former UN Under-Secretary General.

(Photo: US President Joe Biden walks to board Marine One on the South Lawn of the White House. Credit: EPA/Shawn Thew/Pool)