Western analysts say the attacks on energy infrastructure so far have had a serious — but not crippling — effect. Ukrainian drones have repeatedly hit 16 major Russian refineries, representing about 38% of the country’s nominal refining capacity, according to a recent review by the Carnegie Endowment, a U.S.-based think tank.

A Russian bomb strike on a Ukrainian thermal power plant killed two people and injured others on Thursday in the eastern city of Sloviansk, President Volodymyr Zelenskiy said.

LONDON -- Russia overnight launched a heavy air attack on Ukraine -- including striking Kyiv with drones and ballistic missiles -- that killed at least six people, including two children.