RUSSIA said it had broken through two fortified Ukrainian defence lines on the eastern front, with Kyiv describing conditions there as difficult and Western allies announcing more military aid including artillery rounds. The Russian Defence Ministry said the Ukrainians had retreated in the face of Russian attacks in the Luhansk region, although it gave no details and Reuters was not able to independently verify this and other battlefield reports. "During the offensive ... the Ukrainian troops randomly retreated to a distance of up to 3 km (2 miles) from the previously occupied lines," the ministry said on the Telegram messaging app. "Even…