Russian overnight drone and missile strikes killed at least 10 civilians across Ukraine, including seven in Kyiv, where rescuers searched for survivors beneath the wreckage of a partially collapsed apartment building, local officials said Monday.

Russia fired 352 drones and decoys overnight, as well as 11 ballistic missiles and five cruise missiles, Ukraine’s air force said. Air defenses intercepted or jammed 339 drones and 15 missiles before they could reach their targets, a statement said.

The strikes came nearly a week after a combined Russian attack on Ukraine last Tuesday killed 28 people in Kyiv, 23 of them in a residential building that collapsed after sustaining a direct hit by a missile. Ukrainian President Volodymyr Zelenskyy called that attack one of the biggest bombardments of the war, now in its fourth year.

Russian forces have for several months been trying to drive deeper into Ukraine as part of a renewed summer push along the roughly 1,000-kilometer (620-mile) frontline, though the Institute for the Study of War said their progress has been limited.

"Russian forces have failed to make significant gains during this period of intensified offensive operations, however, due in part to the fact that Russian forces are largely relying on poorly trained infantry to make gains in the face of Ukraine’s drone-based defense," the Washington-based think tank said late Sunday.