Russian PM Medvedev: Ukraine upheaval is 'armed mutiny'

Russian Prime Minister Dmitry Medvedev has said he doubts the legitimacy of Ukraine's new authorities.

In the strongest Russian reaction yet to the political upheaval in Kiev, Mr Medvedev said those now in power had conducted an "armed mutiny".

He was speaking after Ukraine's interim interior minister said an arrest warrant had been issued for fugitive ousted President Viktor Yanukovych.