Now playing Next World Transatlantic unity over Crimea crisis - but what about Europe's military spending? 26/03/2014
Now playing Next Ukraine Could Donetsk be the next part of Ukraine to be annexed? To Britain? 25/03/2014
Now playing Next Ukraine Ukraine orders its forces to leave Crimea in face of Russian threats 24/03/2014
Now playing Next World Russia's annexation of Crimea is 'armed robbery,' says Ukrainian PM Yatsenyuk 21/03/2014
Now playing Next World Ukraine crisis: former president Kravchuk warns of further difficulties ahead 20/03/2014
Now playing Next World Ukraine crisis: former president Kravchuk warns of further difficulties ahead 19/03/2014
Now playing Next Ukraine Fresh sanctions due as Russia's annexation of Crimea moves a step closer 95,5% of Crimean voters backed union with Russia during referendum condemned as illegal by US and EU 16/03/2014
Now playing Next Ukraine 'US will not recognise the result of the referendum on Crimea', says John Kerry 14/03/2014
Now playing Next Ukraine Ukraine as it happened: Crimean referendum widens US-Russia split 07/03/2014
Now playing Next World Russia EU ambassador scorns Brussels for 'systemic blunders' over Ukraine 06/03/2014