Russian rebels who support Ukraine have vowed to “march on Moscow” after capturing a border town. Anti-Kremlin troops dashed into Russia for a two-pronged assault on Tuesday. Freedom of Russia Legion, Siberian Battalion and Russian Volunteer Corps have been identified as battling against Vladimir Putin’s squaddies in the regions of Belgorod and Kursk. Members of the Freedom of Russia Legion pledged to “take our land from the regime centimetre by centimetre”. The legion later claimed: “The village of Tetkino, Kursk region, is fully under the control of the Russian liberation forces. “Putin’s ar…