Here's what we know about Ukraine's military offensive in Russia

Ukraine is on day four of a surprise attack on Kursk, some 330 miles south of Moscow. Videos are emerging of burned out Russian vehicles, Russians surrendering and long lines of Russian cars fleeing.

Here's what we know about Ukraine's military offensive in Russia

Here's what we know about Ukraine's military offensive in Russia

Here's what we know about Ukraine's military offensive in Russia

Here's what we know about Ukraine's military offensive in Russia

Here's what we know about Ukraine's military offensive in Russia