United Nations: The UN Security Council is holding its 26th emergency session on Ukraine amid worries about a renewal of full-scale conflict in the rebel-held east.
Yesterday's meeting comes hours after NATO's top commander said new columns of Russian troops and tanks have rolled into eastern Ukraine, which Moscow promptly denied.
The main eastern city, Donetsk, has seen its heaviest shelling in recent weeks despite a cease-fire signed two months ago between Ukraine and Russia-backed separatists. The cease-fire has been violated almost daily.
US Ambassador Samantha Power told the council that Russia "talks of peace, but it keeps fuelling war."
The Security Council has met repeatedly on Ukraine since the crisis began early this year, but little action can be taken as permanent member Russia has veto power.
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