Battles rage in Russia as Kremlin struggles to repel surprise Ukraine incursion

The unprecedented assault entered its fourth day Friday with Moscow rushing reinforcements and bombing its own territory to try and contain the Ukrainian advance.

A convoy of burnt-out military trucks, some bearing the ‘Z’ symbol of the Kremlin’s war and appearing to contain bodies, sits along the side of a highway.

The video, circulating on social media Friday and geolocated by NBC News, doesn’t show a beleaguered section of the front lines in eastern Ukraine. It is a village in Kursk, across the border in southern Russia.

For days now Vladimir Putin’s forces have struggled to put down an incursion into Russian territory by Ukrainian troops, after a surprise attack that threatened to upend the war’s status quo and open a new front in a daring challenge to the Kremlin.