By Yurii Kovalenko, Anastasiia Malenko and Vladyslav Smilianets KYIV (Reuters) -Several nights a week, Daria Slavytska packs a yoga mat, blankets and food into a stroller and descends with her two-year-old Emil into the Kyiv subway.

At least three people have died following another widespread air bombardment by Russia. Two people were killed in the eastern Dnipropetrovsk region, the regional governor, Sergiy Lysak, said, while a woman died of her injuries after being rescued from a burning apartment in Odesa, according to emergency services.

The US and Ukraine are discussing a “mega deal” for Washington to purchase battle-tested drones from eastern Europe in exchange for American heavy weaponry.

Shahed-style drones are deadly systems that Russia has been using to strike Ukrainian cities for nearly three years.

Russia now controls more than two-thirds of Ukraine’s Donetsk region — the main theater of the ground war. Russian forces have carved out a 10-mile-deep pocket around the Ukrainian troops defending the crucial city of Kostiantynivka, partly surrounding them from the east, south and west.

In a forest in the Kyiv region, 35-year-old engineer Andriy Tchornim takes shelter under the trunk of a navy blue 4x4. Eyes locked on the screen of his joystick, he pays no attention to the torrential rain lashing his face in heavy gusts.

In Chuhuiv, Kharkiv region, environmental pollution with petroleum products was recorded following an attack by Russian drones on a local oil depot, according to the Facebook page of the Main Department of the State Service of Ukraine on Food Safety and Consumer Protection in the Kharkiv region.

Donald Trump and Volodymyr Zelensky are considering a deal that involves Washington buying battlefield-tested Ukrainian drones in exchange for Kyiv purchasing weapons from the US.The Ukrainian president said his latest talks with Mr Trump focused on a deal that would help each country bolster its aerial technology.