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 .
Poroshenko says Russia needs to help bring peace to eastern Ukraine . Russian FM Lavrov says Russia respects choice but has some concerns about vote . Gunbattles break out at Donetsk airport as troops try to clear out separatist gunmen .