At least 15 people have been killed and more than 20 are believed buried in the rubble after Russian rockets pummeled apartment buildings in eastern Ukraine, the latest brutal attack on civilians as the invading forces seek to capture the rest of the Donbas region.

Rescuers helped by heavy equipment looked for survivors under the debris Sunday in Chasiv Yar, a town of about 12,000 people in the northern half of the Donetsk province where three buildings in a residential area were destroyed late Saturday. Authorities said six people have been rescued, but regional governor Pavlo Kyrylenko said an estimated 24 are still trapped, including a 9-year-old child.. 

One building had its sides completely shorn off by the impact of the strike, but rescuers continued their efforts in the rain despite the dangerous conditions. The thud of artillery on the nearby front line resonated just a few miles away, making some workers flinch and others run for cover when it got too close.

After taking control of the Luhansk province, the Russians have set their eyes on seizing the Donetsk, which would give them full command of the Donbas. Chasiv Yar is 12 miles southeast of Kramatorsk, a major Russian target.

Latest developments:

►The first few hundred Ukrainians to train in the U.K. have started to receive instruction at sites across Britain in an effort to replenish the ranks with up to 10,000 new recruits. They will be trained in weapons handling, battlefield first aid and patrol tactics, the U.K. Ministry of Defense said. 

►Even though Russian and Belarusian players were banned from this year’s Wimbledon tournament due to the war, the Russian Tennis Federation could claim a victory after Elena Rybakina — born in Moscow and raised in the country’s system but now a Kazakhstan citizen — won the women’s title.

►Ukraine deputy prime minister, Iryna Vereshchuk, told residents of Russian-occupied southern areas to flee ahead of an upcoming “massive fight” in the areas near Kherson and Zaporizhzhia.

►A municipal lawmaker in Moscow, Alexei Gorinov, was sentenced to seven years in prison for comments spurning Russia’s war in Ukraine, the first elected Russian official to be charged under a new law targeting anti-war remarks.

►71 million more people around the world are experiencing poverty as a result of soaring food and energy prices that climbed in the weeks following Russia’s invasion, the United Nations Development Program said in a report.

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Russians appear to set sights on annexing Kharkiv province

Two rocket attacks Sunday in the Kharkiv province, which occupiers consider an “inalienable part of Russian land,” may be the latest sign the Kremlin will attempt to annex at least part of the industrial northeastern territory that houses Ukraine’s second-largest city.