Kursk, Russia attack by Ukraine military considered audacious and counter-intuitive
Ukrainian brigades advanced more than 20 kilometers (12 miles) inside Kursk in southern Russia in the first two days of the operation.
Kursk offensive: Ukraine embarrasses Putin with surprise assault on southern Russia | CNN
Kursk incursion: Putin sends reinforcements to battle Ukraine's Russia attack - NBC
Russia declares emergency in Kursk, under attack by Ukraine | AP News
Russia fighting intense battles against major Ukrainian incursion | Reuters
kursk russia attack - Google Search
BACKGROUND
Kursk is 270 miles south-southwest of Moscow, and less than 70 miles from the Ukraine border with Russia.