The latest attack on the railways Moscow uses to send supplies to Ukraine - this time apparently from inside Russia - will only add to its logistical difficulties on the battlefield. Foreign news reporter @MikeRDrummond Russia's railways are critical to supplying its invasion of Ukraine, but with more than 20,000 miles of tracks, the system is vulnerable to attack by citizens opposed to the war. And that's exactly what seems to be happening. The governor of Russia's Belgorod region announced on Monday that an explosive device damaged the railway near the village of Novozybkovo. Russia's logistics - the way it maintains supplies and communications with its ground forces - have come under increasing strain as the war has gone on. US warns Moscow against 'incredibly serious mistake' - Ukraine war latest updates In recent months Ukraine has been able to use HIMARS rocket systems supplied by the USA to target ammunition depots and rail links deep behind Russian lines, with high accuracy. Th