Rebels claim to encircle Ukraine troops

Pro-Russian rebels in Ukraine say they have encircled the town of Debaltseve - but Ukraine says its troops are still fighting along a supply road.
The strategic town is a key railway junction and has been the focus of intense fighting for more than a week.
Ukrainian officials said at least nine soldiers and seven civilians had died in fighting in the town since Sunday.
Earlier, US President Barack Obama said he had not ruled out supplying arms to Ukraine if diplomacy failed.
Russia had violated "every commitment" in a truce deal, he said, after meeting German Chancellor Angela Merkel.
Mrs Merkel is opposed to sending weapons to the warring sides.
She has been briefing Mr Obama on a new peace deal for the conflict in Ukraine's east.
Russia has denied accusations of sending troops and supplies to re-enforce the rebels battling Ukrainian forces.