Media playback is unsupported on your device

Ukraine crisis: 'Tension and sudden anger' in Crimea

3 March 2014 Last updated at 23:54 GMT

Despite a rising tide of diplomatic pressure from around the world, Russia insists its troops will remain in Ukraine until the political situation has been normalised.

Ukrainian defence sources have accused Russia's military of demanding the surrender of their forces in Crimea.

World affairs editor John Simpson reports from Sevastopol.