By Tom Balmforth ISTANBUL (Reuters) -Russian negotiators at peace talks in Istanbul demanded Ukraine pull its troops out of all the Ukrainian regions claimed by Moscow before they would agree to a ceasefire,

Russia and Ukraine’s first direct talks in three years began Friday with hopes as dim as the gray Istanbul skies.

But the two sides failed to broker a temporary cease-fire or a meeting between their two leaders, a sign of how far apart they remain on ending the conflict.