Russia pounded military targets throughout Ukraine on Saturday, in apparent retaliation for the sinking of an important naval ship and in preparation for an offensive in the Donbas region of the country’s east.

Russia’s Defense Ministry said Saturday the strikes had destroyed workshops in a tank factory in Kyiv, the Ukrainian capital, and a military hardware repair facility in Mykolaiv, in southern Ukraine. Also targeted was the Ukrainian military factory on the outskirts of Kyiv, called Vizar, that produced the Neptune anti-ship missile that sank the flagship vessel of Russia’s Black Sea fleet, the Moskva, in a major embarrassment for the Kremlin.

The coming battle in the east will be fought largely on open terrain. The Russian missile attacks Friday into Saturday seemed calibrated to weaken Ukraine’s ability to withstand armored assaults in that setting.

Rocket and missile attacks also rained down Saturday on an airport in central Ukraine, the Black Sea port of Odesa, the northeastern city of Kharkiv and the western city of Lviv. Explosions from at least one strike shook Kyiv, and Ukraine’s air defense force said it had shot down a volley of four cruise missiles in flight elsewhere in the country.

Moscow retaliated diplomatically against the West on Saturday, barring Prime Minister Boris Johnson and other senior British officials from entering the country over their support for Ukraine, the Russian Foreign Ministry said. Johnson has been a leading voice in Europe against Moscow and even traveled to Kyiv a week ago to meet with Ukraine’s president, Volodymyr Zelenskyy.

In Germany, Economy Minister Robert Habeck called on people to cut back their energy consumption as part of what he described as a national effort to reduce dependence on Russian fossil fuels in response to its invasion of Ukraine.

Through the day Saturday, air raid sirens wailed in Kyiv; and overnight, the distant, dull thuds of air defense missiles exploding could be heard in the sky over the city. Kyiv’s mayor, Vitali Klitschko, said the city remains a target for Russia despite the defeat of the ground assault force. Police said Friday they have so far found 900 bodies of civilians in the Kyiv region, the administrative district surrounding the capital.

Zelenskyy said in a late-night address Saturday that Russian forces had been expelled from nearly 1,000 villages, towns and cities of varying sizes across Ukraine.

Zelenskyy also acknowledged the Ukrainian army had lost as many as 3,000 troops in fighting to date, while insisting that Russian fatalities were far higher.

In Kharkiv, where Russia is trying to keep Ukrainian forces tied up as its troops try to advance into areas farther south, one person was killed and eight others wounded when what appeared to be guided missiles slammed into a shopping center in the heart of the shattered city.