Russia launched a drone strike on the Ukrainian capital Kyiv early on Wednesday, wounding at least six people and damaging buildings in two districts, city officials said. Explosions boomed across the morning sky as Ukraine's air force warned of drones approaching the city and Mayor Vitali Klitschko said air defences were repelling an enemy attack.

Russia is demanding the United Nations condemn Kyiv following an alleged drone attack that it claims killed a journalist working for a Russian outlet and injured several others.

Russia said Sunday that Ukraine had launched a "counterattack" in the western border region of Kursk, where Kyiv's forces began a shock ground offensive last August.- Airports shut - Both Russia and Ukraine have exchanged regular attacks since the year began.

Russian forces launched 103 drones from three directions towards Ukraine on the night of January 5. Air defense shot down more than half of them, according to the Air Force of the Armed Forces of Ukraine.