An armed pro-Russian separatist stands in front of damaged buildings following what locals say was shelling by Ukrainian forces in DonetskUkrainian army units which had been trapped with the aid of separatists on the border with Russia broke out of the blockade on Friday and rejoined government forces, but 15 infantrymen and border guards were killed within the operation, the Ukrainian military mentioned. Defense force sources quoted by Ukrainian media mentioned Ukrainian units had been effectively encircled by way of the rebels on a element of the border with Russia south of town of Luhansk and east of the main regional city of Donetsk. After government forces spread out an get away corridor, the trapped units had been in a position to pressure their manner out, militia sources quoted by the media mentioned. "Seven service workforce and eight border guards have been killed and seventy nine injured," defense force spokesman Andriy Lysenko advised journalists.