Blazing trains, burning tracks, black smoke.

Footage posted online by Ukrainian fighters documents their repeated sabotage attacks on a vast railroad system being built by Russia across the occupied territories of Ukraine. But their efforts are not nearly enough to hold back the tide of Moscow¡¯s rapid industrial expansion.

The attacks on Russia¡¯s supply chains have made scant impact, and tightening Russian control is snuffing out opposition efforts, said one Ukrainian fighter, Orest, using his military call-sign for security reasons as he operates ?behind enemy lines in the Donetsk region. ¡°The railroad is hundreds of kilometers long,¡± he said. ¡°We¡¯re not all-powerful, unfortunately.¡±