Ukraine struck Russian regions with a major drone and missile attack overnight, damaging at least two factories and forcing schools to close in a major southern Russian city, according to Russian officials and media.

Flight restrictions were imposed at five airports in Russia after Ukraine unleashed an attack reportedly with more than 200 drones and ballistic missiles. Alexander Bogomaz, the governor of the Bryansk region in western Russia, said Ukraine had launched a major missile attack but did not say which missiles had been used.

President Volodymyr Zelenskyy says Ukraine's forces have captured two North Korean soldiers fighting alongside Russian troops in Russia’s Kursk border region.

Russia has leaned on its increasingly close ally North Korea for supplies of artillery shells and ballistic missiles to prosecute a grinding war in Ukraine. In October, the partnership entered a new phase as Pyongyang dispatched thousands of soldiers to bolster Russia’s armed forces.

About 300 North Korean troops have been killed and 2,700 others injured while fighting for Russia against Ukrainian forces, South Korean lawmakers said Monday.