"There remains the threat of air and missile strikes on the entire territory of Ukraine," Ukraine's forces said, according to a translation, following attacks on a number of cities this week, including Kyiv.
The massive wave of Russian attacks coincides with the appointment of Sergey Surovikin as overall commander of Vladimir Putin's invasion.
Anton Gerashchenko, advisor to the Minister of Internal Affairs of Ukraine, dismissed the significance of Surovikin's appointment.
Read more As Ukraine gets closer to victory, nuclear war gets closer too As Ukraine gets closer to victory, nuclear war gets closer too.
"There will be no real change in offensive capabilities of the Russian troops because he is not more capable and competent than the rest of the Russian generals," he told Newsweek.
In their assessment on Wednesday, Ukraine's armed forces said they had repelled Russian attacks in the areas of Mykolaivka, Soledar, Bakhmutske, Bakhmut, Mayorsk, Pervomaiske and Krasnohorivka.
British defense officials added that the limited effect of Russian tactical combat jets and "the lack of a reliable, sustainable, and accurate operational-level strike capability" are likely to be significantly hampering Russian capabilities in Ukraine. »