Ukraine has unexpectedly postponed exchanging prisoners of war and accepting the bodies of killed soldiers for an indefinite period, Kremlin aide Vladimir Medinsky said on Saturday.Russia and Ukraine held the second round of peace talks in Istanbul on Monday where they agreed to exchange more prisoners - focusing on the youngest and most severely wounded - and to return the bodies of 12,

Russia accused Ukraine of delaying a large-scale exchange of captured soldiers and the handover of killed soldiers' bodies, an agreement reached during peace talks in Istanbul. Moscow claims to have prepared for the exchange,

Russia bombarded Ukraine’s second-largest city with massive strikes in the early hours of Saturday, its mayor said, one night after Moscow carried out one of the war’s largest aerial assaults on Ukraine.