Kyiv troops attacked in at least three areas within the Kursk region, some using armoured vehicles, according to the Institute for the Study of War

Russia said on Sunday that Ukraine had launched a new attack in the Kursk region, an area of western Russia from which Russian troops have been trying to eject Ukrainian forces for the past five months.

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.