Media playback is unsupported on your device

British UN envoy: 'Free and fair referendum cannot take place'

11 March 2014 Last updated at 05:53 GMT

Nato says it will deploy reconnaissance planes over Poland and Romania, as part of efforts to monitor the situation in Ukraine.

The United Nations Security Council has met for the fifth time in 10 days to discuss the crisis.

Britain's ambassador to the UN, Mark Lyall Grant, said that "a free and fair referendum can not take place while Crimea is under the illegal control of Russian troops".

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.