Shelling killed 6 people in Donetsk , Ukrainian officials say . Some Ukrainian troops are released by pro - Russian rebels in Donetsk . Ukrainian President Petro Poroshenko said in a Twitter post that 73 troops were released in Donetsk . President Viktor Roman talks about border violations with German leader . As shelling continues , officials in Donetsk describe the situation as ` ` critical ''
Shelling killed 6 people in Donetsk , Ukrainian officials say . Some Ukrainian troops are released by pro - Russian rebels in Donetsk . President Viktor Roman talks about border violations with German leader . As shelling continues , officials in Donetsk describe the situation as ` ` critical ''