US President Obama and Russian President Vladmir Putin spoke on the telephone tonight amid escalating tension over the Crimea region of Ukraine.
Russian state broadcaster Ria reported that Putin told Obama Russia "reserves the right to protect its interests and those of Russia speakers if there is violence" in the region, whilst Reuters reports that Obama "raised concerns to Putin's about Russia's plans for possible intervention".
Pro-Russia activists recaptured administrative headquarters in the Ukrainian city of Donetsk and flew the Russian flag from its roof.
ITV News' Europe Correspondent describes the tense atmosphere surrounds a central government building in Donetsk .
New footage obtained by ITV News shows Russian troops firing warning shots as Ukrainian soldiers approached during a tense stand-off today.