Ukrainian officials have led 60 foreign diplomats on a tour of damaged government offices in Kyiv. This follows Russia's largest aerial attack on Ukraine since its full-scale invasion began over three years ago. On Sunday, more than 800 drones and decoys were used in the assault, killing four people, including a mother and her infant. The attack hit Kyiv's main government building for the first time. Ukrainian Prime Minister Yuliia Svyrydenko condemned the attack as a mockery of diplomatic efforts. Ukraine and European leaders are urging Washington to increase economic sanctions on Russia.