Russia launched its biggest aerial attack on Ukraine in some time, targeting power plants and energy infrastructure in Kyiv and other areas. The strikes happened as temperatures fell below minus 20°C (-4°F) overnight. Over 1,000 tower blocks in Kyiv lost heating again. A power plant in the eastern city of Kharkiv was damaged beyond repair. President Volodymyr Zelensky said Russia was "choosing terror and escalation" instead of diplomacy. He asked for "maximum pressure" on Moscow from Ukraine's allies. The attack came just after an "energy truce" between Donald Trump and Vladimir Putin expired. It also coincided with NATO Secretary-General Mark Rutte's visit to Kyiv, where he met Zelensky and addressed parliament. Negotiations between Russia and Ukraine are planned in Abu Dhabi later this week. But Russia showed it has other plans. Explosions in Kyiv began just after midnight and lasted over seven hours, with more blasts following. Residents sheltered in metro stations, some pitching tents to stay warm. Zelensky said Russia fired over 70 ballistic and cruise missiles and 450 drones to overwhelm Ukraine's air defenses. Ukraine's Air Force intercepted only 38 missiles, meaning many hit their targets. Officials have repeatedly noted a shortage of missiles to defend the skies. Ukraine relies heavily on US-made Patriot missiles. "Timely delivery of missiles for air defense systems and the protection of normal life are our priority," Zelensky wrote on X. "Without pressure on Russia, there will be no end to this war." He accused Moscow of using the coldest winter days to "terrorise people." The private company DTEK reported two of its power plants were hit again overnight. This was the ninth massive strike on the energy sector since October. State-owned facilities in Kyiv and elsewhere were also damaged. Repair teams have been working nonstop, but there are not enough workers to keep up. Many residents have faced days or weeks without heating. They sleep in hats and coats under heavy blankets. Power cuts last for hours, forcing some to use soup kitchens for hot meals. Many believe Russia aims to make life miserable to pressure Ukrainians into surrender or cede land in eastern Donbas. But anger and resistance remain strong. "Russia won't get what it wants," said Vera, queuing for stew served by volunteers. "We are stronger than them in any case." Zelensky planned to sleep in a school with a generator to stay warm. "In the daytime you move around a bit," he said. "But at night it's really cold." He accused Russia of bombing civilians to make them "freeze and die." The latest attack damaged several residential buildings, some catching fire from falling debris during missile and drone interceptions. Several people were injured.