Lavrov says Ukraine needs to help bring peace to eastern Russia . Ukrainians FM Poroshenko says Russia respects choice but has some concerns about vote . The men , who as Chechens are Russian citizens , said they were there as `` volunteers . '' Gunbattles break out at Donetsk airport as troops try to clear out separatist gunmen .
Lavrov says Ukraine needs to help bring peace to eastern Russia . Ukrainians FM Poroshenko says Russia respects choice but has some concerns about vote . Gunbattles break out at Donetsk airport as troops try to clear out separatist gunmen .