Ex-Russian spy Litvinenko may have been poisoned with polonium 'not once but twice'.
A state of emergency has been declared in parts of the US, as snow falls heavily.
News, interviews and stories from around the world with Dotun Adebayo.
Saudi Arabia's king has died, Jamaica is to decriminalise cannabis, the travel phone-in.
Government plans to introduce plain cigarette packaging in England, and Science Phone-in.
UK jihadist admits terrorism charges; Obama's State of the Union; and Murray v Matosevic.
The latest on the escalating violence in eastern Ukraine.
Includes tennis commentary of Andy Murray v Yuki Bhambri at the Australian Open.