Crimea tension: Key video moments
A round-up of key video moments from Crimea - a centre of pro-Russian sentiment - following the ousting of Ukrainian President Viktor Yanukovych.
2 March: Tension remains high in Crimea
Russia continues to build up its forces in Crimea despite the US urging Moscow to call its soldiers back to their bases.
1 March: Crimea in 'peace' plea to Putin
The new leader of Ukraine's autonomous Crimea region, Sergiy Aksyonov, has asked Russian President Vladimir Putin for help to ensure peace.
28 February: Yanukovych: 'I will fight for Ukraine'
Ukraine's ousted president, Viktor Yanukovych has said he intends to "continue the fight for the future of Ukraine... against those who try to occupy it."
28 February: Armed men patrol Crimean airports
Armed men are patrolling airports in the Crimean capital Simferopol and Belbek International airport in the Black Sea port of Sevastopol.
28 February: Russian navy vessel off Balaklava
The BBC's Christian Fraser says the sighting of a Russian navy vessel at the Port of Balaklava in Crimea is significant in the context of the current situation.
28 February: BBC releases unseen footage of Kiev clashes
BBC Newsnight releases previously un-broadcast footage of the clashes in which dozens died in Kiev on 20 February.
27 February: Russian flags fly over Crimea parliament
Pro-Russian demonstrators gather outside two government buildings seized by armed men in Simferopol, Crimea.
27 February: Ukraine warns Russia over aggression
Ukraine warns Russia against "military aggression" in the Crimea region after armed men seize the regional parliament building.
26 February: Rival protesters rally in Crimea
Pro-Russian demonstrators and supporters of Ukraine's interim leaders clash at rival protests in the city of Simferopol.
25 February: Could Crimea break away from Ukraine?
Ukraine's interim president expresses concern at what he calls "the serious threat of separatism".
24 February: First week in new Ukraine
Russia steps up its rhetoric against Ukraine's new Western-leaning leadership as tensions rise over the ousting of President Viktor Yanukovych.
23 February: Crimean bay where Yanukovych was last seen
The historic bay at Balaklava, a small suburb of the Crimean city of Sevastopol, is where most of Viktor Yanukovych's official bodyguards finally abandon him in the early hours of Monday.
Brief history of Crimea
BBC News looks back at the history of the region.