While the group of seven continued their lobbying efforts in Soviet Russia, forces commanded by the anti-Bolshevik Russian warlord Roman von Ungern-Sternberg invaded Mongolia from the east and ejected occupying Chinese garrisons from Khüree in October 1920. No longer faced with directly confronting the Chinese in Mongolia, the Soviets finally threw their backing behind the Mongolian revolutionaries. Choibalsan and Sükhbaatar relocated to Troitskosavsk (modern-day Kyakhta on the Russian-Mongolian border) to coordinate revolutionary activities and recruit Mongolian fighters. Choibalsan secretly ventured as far as Khüree to consult with MPP supporters, enlist fighters, and spirit members of Sükhbaatar's family back to Troitskosavsk.