MOSCOW (AP) -- Seven Ukrainian troops were killed in overnight fighting in the restive east, Ukrainian officials said Friday, as hostilities between government forces and pro-Russian rebels continued two days after President Petro Poroshenko said he would soon call a unilateral cease-fire.
Vladislav Seleznev, spokesman for Ukrainian forces in the east, said seven soldiers were killed and 30 injured in fighting against pro-Russian separatists outside the village of Yampil in the Donetsk region since Thursday. Seleznev said 300 rebels were killed, but that could not be immediately verified.
Russian President Vladimir Putin has voiced concern about the Ukrainian military onslaught, while NATO on Thursday reported that Russia was resuming a military build-up at the Ukrainian border.
Putin and Poroshenko discussed details of the peace plan in a telephone call on Thursday. Poroshenko's office said he emphasized the need for introducing effective border controls and quickly releasing hostages.
Late on Thursday, Putin chaired a meeting of Russia's Security Council, a body that includes the country's top officials, to discuss the crisis in Ukraine, the Kremlin said on Friday, but stopped short of providing details.
The U.N. says at least 356 people, including 257 civilians, have been killed since May 7 in eastern Ukraine.