Synopsis: The Straits Times audio channel showcases key news analyses, and selected episodes from our niche and sponsored series.

President Vladimir Putin put Russia's nuclear deterrent on high alert on Sunday (Feb 27) in the face of a barrage of Western reprisals for his war on Ukraine.

What are the key questions surrounding Mr Putin's latest moves?

Senior analyst Dr Malcolm Davis from the Australian Strategic Policy Institute weighs in. ST's mobile editor Jeremy Au Yong talks about how the Ukraine crisis is playing out online.

Follow ST’s live coverage of the Ukraine crisis here.

Produced by: ST Video team

Edited by: ST Video team and Teo Tong Kai

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