2 days of talks set to start at 0730GMT Tuesday at Dolmabahce Presidential Office.
Russian commanders being accused of 'cowardice, weakness' by Russian authorities, claims Ukrainian presidential aide.
Cease-fire to be in effect 0800-1900GMT for safe evacuation of people, say Ukrainian officials.
Suicide bomber detonates himself at Shia mosque in northwestern Peshawar, say police.
Brent oil nears $120.
Sounds of bombardment, shelling early Sunday in Kyiv accompanied by gunfire near iconic Independence Square.
Ukrainian president insists on holding talks in Warsaw, Budapest, Istanbul, or Baku.
Voting in constitutional referendum begins at 8 a.m. local time (GMT0500).
DAHA FAZLA HABER GÖSTER