Soldiers of the Ukrainian self-defence battalion "Azov" sit in a truck as they drive through a checkpoint in the southern coastal town of Mariupol, September 5, 2014. Ukrainian forces pounded pro-Russian rebels to the east of the port of Mariupol on Friday, hours before envoys from Ukraine and Russia were expected to announce a ceasefire as the starting point for a wider peace plan. REUTERS/Vasily Fedosenko (UKRAINE - Tags: MILITARY POLITICS CIVIL UNREST CONFLICT)