Russia has retaken about two-thirds of the territory Ukraine seized last summer in the Kursk region of Russia, but at a fearful cost in lives.

Russia attacked Ukrainian energy facilities with dozens of missiles and drones during the night, officials said Friday, hobbling the country’s ability to deliver heat and light to its citizens and to power weapons factories vital to its defenses.

With a mission to destroy infrastructure, Russia attacked Ukraine Friday with dozens of missiles and more than a hundred drones.