New head of Ukraine's navy defects in Crimea

The newly appointed head of Ukraine's navy has sworn allegiance to the Crimea region, in the presence of its unrecognised pro-Russian leader.

Rear Admiral Denys Berezovsky was only made head of the navy on Saturday, as the government in Kiev reacted to the threat of Russian invasion.

Russia's troops have been consolidating their hold on Crimea, which is home to its Black Sea Fleet.