Russia has launched a large-scale wave of strikes against Ukraine, firing hundreds of drones and dozens of missiles.
Four people were killed and more than 50 others injured in Kyiv and its surrounding areas, with explosions heard across the region overnight into Sunday, and reports of damage to residential buildings and schools.
Ukrainian President Volodymyr Zelensky said the Oreshnik hypersonic missile was used in a strike on Bila Tserkva, a city within the Kyiv region.
The strikes follow Russian President Vladimir Putin's vow to retaliate after accusing Ukraine of carrying out a deadly attack on a student dormitory in the town of Starobilsk on Friday in which 18 people were killed.
The general staff of Ukraine's armed forces said it did carry out an attack near Starobilsk in Russian-occupied eastern Ukraine overnight on Friday, but maintained that it struck an elite Russian military unit.
Russia's overnight strikes on Sunday came after warnings from Zelensky that there were signs Russia was planning an attack.
He had also said that Ukraine's intelligence services had received information that Russia could use the Oreshnik missile, which reportedly travels at more than 10 times the speed of sound and is impossible to intercept.
Ukraine's air force said that from 18:00 local time on Saturday, it detected 90 missiles and 600 drones.
The attack hit more than 50 locations across Kyiv, according to Ukraine's national police. Residential buildings, shopping centres, and emergency service and police buildings were reportedly struck.
Zelensky said a water-supply facility was also attacked.
"The capital has been subjected to a massive ballistic attack. Further launches are possible." — Tymur Tkachenko, head of Kyiv's military administration, via Telegram
Kyiv's mayor Vitali Klitschko said two people had been killed in the city itself, with 30 people, including two children in hospital.
A person was killed after a nine-storey residential building in the central Shevchenko district was hit and a fire broke out on the top floors.
In the same district, a strike near an air raid shelter at a school blocked its entrance with debris, trapping several people inside.
Emergency services rushed to multiple scenes of damage across the city, putting out blazes, clearing debris and treating the injured.
In the wider Kyiv region surrounding the capital, a further two people were also killed, according to regional head Mykola Kalashnyk.
He described the attack as "deliberate terror against peaceful people", adding that "emergency services are working in all places".
Outside Kyiv, the regions of Cherkasy, Kharkiv, Kropyvnytskyi, Odesa, Poltava, Sumy, and Zhytomyr have also come under attack, according to Ukrainian Foreign Minister Andrii Sybiha.
At least 83 people have been injured since the start of the day, Zelensky said.
俄罗斯对乌克兰发动大规模多轮空袭，发射数百架无人机及数十枚导弹。
基辅及其周边地区共有四人遇难、逾50人受伤。从夜间到周日凌晨，爆炸声持续不断，民用建筑和学校据报均遭到破坏。
乌克兰总统弗拉基米尔·泽连斯基表示，城市比拉·采尔克瓦在此轮袭击中遭到打击，俄方动用了"榛树"高超音速导弹。
此前，俄罗斯总统弗拉基米尔·普京公开扬言报复——他指责乌克兰于周五袭击斯塔罗比尔斯克镇一处学生宿舍，造成18人死亡。此轮空袭正是在这一背景下展开的。
乌克兰武装部队总参谋部承认，周五夜间曾在俄占乌克兰东部斯塔罗比尔斯克附近采取军事行动，但坚称打击目标为俄罗斯精锐军事单位。
俄罗斯周日夜间发动袭击之前，泽连斯基已发出警告，称有迹象表明俄罗斯正在筹划攻击行动。他还透露，乌克兰情报部门已获悉俄方可能动用"榛树"导弹——据报道，该导弹飞行速度超过10倍音速，现有系统难以拦截。
乌克兰空军称，自周六当地时间18时起，已监测到90枚导弹和600架无人机来袭。
据乌克兰国家警察介绍，此次袭击波及基辅逾50处地点，住宅楼、购物中心以及警察、消防等机构建筑均遭到打击。泽连斯基表示，一处供水设施也未能幸免。
"首都遭受了大规模弹道导弹袭击，后续可能还有来袭。" — 基辅军事行政长官蒂穆尔·特卡琴科，发布于 Telegram
基辅市长维塔利·克利奇科表示，市区内已有两人遇难，30人送医救治，其中包括两名儿童。
市中心舍甫琴科区一栋九层住宅楼中弹起火，顶层大火造成一人死亡。该区另有一所学校的防空洞入口附近遭到打击，爆炸碎片将入口堵死，数人被困其中。
救援人员紧急赶赴全市多处受损现场，扑灭火灾、清理废墟并救治伤员。
据基辅地区负责人米科拉·卡拉什尼克介绍，首都周边的基辅大区另有两人遇难。他将此次袭击定性为"针对无辜平民的蓄意恐怖行为"，并表示救援人员正在所有现场全力展开工作。
除基辅外，此次袭击还波及多个地区：切尔卡瑟、哈尔科夫、克罗皮夫尼茨基、敖德萨、波尔塔瓦、苏梅和日托米尔均受到冲击。乌克兰外交部长安德里·西比哈对此予以证实。
泽连斯基表示，袭击发生以来，受伤人数至少已达83人。