Fierce fighting has been raging in the city of Pokrovsk, located in the Donetsk region, for a long time. Ukrainian media have previously reported on Russian attacks on drone operators.
The situation in Pokrovsk is difficult, Zelenskyy told media in Kyiv.
He admits that the Russian army has entered parts of the city, but rejects Russia's claim that the city is surrounded.
Russian President Vladimir Putin has recently claimed that the Russian army is making significant progress in the war.
