KYIV, Ukraine — For more than a week, Ukrainian troops have pushed into the Kursk region of Russia, just north of their border, in the most extensive incursion by Kyiv's forces in the 2½-year-old war. The advance has showed significant weaknesses in Russia's border defense and embarrassed the Kremlin.
What we know about the operation:
When and where did the attack begin?
The surprise attack by Ukrainian troops in tanks and other armored vehicles began Aug. 6 and came from several directions into Russia's Kursk region. Although Russia has seen previous incursions of its territory in the war, the Kursk raid is notable for its size, speed, the reported involvement of battle-hardened Ukrainian brigades, and the length of time they have stayed inside Russia. As many as 10,000 Ukrainian troops are involved, according to Western military analysts. It's the first time foreign troops have invaded and held the territory since Nazi Germany did it in World War II against the Soviet Union.
This month's stunning attack met little resistance at the Russian border. Although the Kursk region has been subject to Ukrainian drone attacks, the border was relatively lightly guarded, mostly by poorly trained conscripts and national guard units. More than 120,000 residents have been evacuated, according to Russian officials.
Ukraine hid its preparations for the attack. It also did not inform its supporters, like the U.S. or Poland, of its plan, according to leaders of those countries. U.S. officials have not objected to the use of American-donated weapons in the Kursk region.
What's the situation now?
Ukraine's military claims to hold 74 towns and settlements in the area, encompassing about 1,000 square kilometers (400 square miles) of territory. It said its troops took more than 100 Russian soldiers prisoner and destroyed a Russian Su-34 jet used to bomb Ukrainian front-line positions and cities.
