Ukraine move draws Putin threat
Ukrainian commandos have moved on the separatist stronghold of Sloviansk, prompting a warning of “consequences” from Russia’s President Vladimir Putin.
At least two separatists were reported killed as the commandos, backed by armoured vehicles, cleared checkpoints on the outskirts of the eastern town.
But a BBC correspondent says the centre of Sloviansk is quiet.
Pro-Russian separatists are occupying key buildings in at least a dozen eastern towns, defying Kiev.
There was also further unrest earlier on Thursday in the south-eastern city of Mariupol.