How divided is Ukraine?

Available for over a year

Armed men have seized the regional parliament in Crimea, in the south-east of the country, and have raised the Russian flag above it. Meanwhile Ukraine's interim President Olexander Turchynov has warned Russia against any "military aggression" in Crimea, as Russia began a second day of military exercises on the border. Ukraine's prime minister has said he is committed to having Ukraine as one united country - but is it a commitment he can keep?