Commandos have moved on the separatist stronghold of Sloviansk in eastern Ukraine, prompting a warning of "consequences" from Russia's president. At least two separatists were reported killed as commandos, backed by armoured vehicles, cleared checkpoints on the outskirts of the town. But a BBC correspondent says the centre of Sloviansk is currently quiet.
BBC: Ukraine attack in Sloviansk draws stern Putin warning
A protester doesn't want his picture taken as he stands guard near the local police station captured by insurgents in Sloviansk on April 13.
