Russian aid trucks on the main road to Luhansk
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Aid convoy crosses border back into Russia

23 August 2014 Last updated at 10:09 BST

Trucks from Russia's aid convoy to Ukraine have begun to turn back towards Russia.

President Obama and the German Chancellor accused Moscow of a dangerous escalation of tension in eastern Ukraine, after the aid convoy entered a rebel-held area without approval from Kiev.

The convoy had arrived in the rebel stronghold of Luhansk, where there has been fierce fighting.

David Stern reports from Kiev.