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Ukraine asks for talks with Russia and accuses the country of ignoring its requests to explain its troop build up. In the meantime diplomatic efforts to ease tension between the two countries also continue with a visit to Ukraine by the German Chancellor.

We also have a special report from our correspondent from Mariupol in the eastern Ukraine.

The Court of Arbitration for Sport has confirmed it will allow the 15 year old Russian ice skater Kamila Valieva to continue to compete at the Winter Olympics.

And university staff in the UK start 10 days of industrial action today in a dispute over pay.