Upon Vytautas' death in 1430, Yuri went to the Golden Horde, returning with a license to take the Moscow throne. But the Khan did not support him any further, largely due to the devices of the Smolensk princeling and Moscow boyarin Ivan Vsevolzhsky. When Yuri assembled an army and attacked Moscow, Vasily II, betrayed by Vsevolzhsky, was defeated and captured by his enemies (1433). Upon being proclaimed Grand Duke of Moscow, Yuri pardoned his nephew and sent him to reign in the town of Kolomna. That proved to be a mistake, as Vasily II immediately started to plot against his uncle and gather all sort of malcontents. Feeling how insecure his throne was, Yuri resigned and then left Moscow for his northern hometown. When Vasily II returned to Moscow, he had Vsevolzhsky blinded as a traitor.