Some parts of the eastern Ukrainian town of Avdiivka are in a “critical” condition as they fight off Russian shelling and incursions, a local official said on Tuesday. Russia launched a renewed push to capture Avdiivka in October, with troops on three sides of the town pounding it with relentless artillery strikes in a bid to force a Ukrainian withdrawal. “While for several weeks we were saying the situation was very difficult but under control, now the situation is very difficult and in some places critical,” said Vitaliy Barabash, head of the town’s military administration. “This does not me…