The Siege of Moscow in 1382 was a battle between the Muscovite forces and Tokhtamysh, the khan of the Golden Horde supported by Timur. The Russian defeat reasserted the Horde's rule over some of Russian lands, which overthrew Tatar rule 98 years later by the great stand on the Ugra River. Tokhtamysh also re-established the Golden Horde as a dominant regional power, reunified the Mongol lands from Crimea to Lake Balkash and defeated Lithuanians at Poltava in the next year. However, he made the disastrous decision to wage a war against his former master, Tamerlane, and the Golden Horde never recovered.