Ukraine’s former prime minister, Yulia Tymoshenko, has urged Western powers to unite on a hard line against Russian president Vladimir Putin in the Crimea crisis.

What happens now to Ukrainian forces in Crimea is one of many unanswered questions, write Aleksandar Vasovic and Mike Collett-White.

Ukraine has a new government, but Western leaders should be very careful about what they wish for, argues Geoff Roberts

Police clashed with protesters in central Kiev yesterday and the fate of Ukraine’s government was uncertain after embattled president Viktor Yanukovich offered key posts to opposition leaders, including the role of prime minister.