WRAPUP 6-Ukraine shuts 'post-apocalyptic' battlefield town to civilians

(Adds Zelenskiy comments on Zaporizhzhia, Ukrainian military update)

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EU urges Belarus not to host Russian nuclear weapons

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Avdiivka becoming 'post-apocalyptic', city shuts down -official

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Russia downs Ukrainian drone south of Moscow, 3 hurt -ministry

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Bakhmut still under Russian assault

By Dan Peleschuk

KYIV, March 27 (Reuters) - Ukraine shut the eastern town of Avdiivka to non-military personnel on Monday, describing it as a post-apocalyptic wasteland, as Kyiv tried to break the back of Russia's flagging winter offensive before a counter-assault of its own.

A Ukrainian general said Kyiv was planning its next move after Moscow appeared to shift focus from the small city of Bakhmut, which Russia has failed to capture after several months of the war's bloodiest fighting, to Avdiivka further south.

The Ukrainian Armed Forces General Staff said in a Monday evening update that Russian forces were still trying to storm Bakhmut and had shelled the city and surrounding towns.

Front lines in Ukraine have barely budged for more than four months despite a Russian winter offensive. The Ukrainian military aims to wear down Russian forces before mounting a counteroffensive.

Ukrainian ground forces commander Colonel General Oleksandr Syrskyi, who said last week the counterattack could come "very soon", visited frontline troops in the east and said his forces were still repelling Russian attacks on Bakhmut.

Defending the small city in the industrialised Donbas region was a "military necessity", Syrskyi said, praising Ukrainian resilience in "extremely difficult conditions".

Last week, the Ukrainian military warned that Avdiivka, a smaller town 90 km (55 miles) further south, could become a "second Bakhmut" as Russia turns its attention there.

Both towns have been reduced to rubble in fighting that both sides have called a "meat grinder". Russian forces say they are fighting street by street.

"I am sad to say this, but Avdiivka is becoming more and more like a place from post-apocalyptic movies," said Vitaliy Barabash, head of the city's military administration. Only around 2,000 of a pre-war population of 30,000 remain and he urged them to leave.

Ukrainian military video showed smoke billowing from ruined apartment blocks and dead soldiers on open ground and in trenches in Bakhmut.

Kyiv also said Russian forces again shelled Vuhledar, further south in the Donetsk region, where they have tried to advance for weeks with what the Ukrainian military says are heavy losses.