Pozharsky and Trubetskoy presided over the Muscovite government for half a year, until a new tsar was elected by the Zemsky Sobor, whereupon Pozharsky was made a boyar and Trubetskoy was honoured even more highly. The Time of Troubles was now over, but minor risings couldn't be subdued for an extended period of time. In 1615, Pozharsky operated against the Lisowczycy and three years later he fell upon the forces of Vladislaus IV, yet the conservative system of mestnichestvo precluded him from taking supreme command in any of these engagements. He governed Novgorod in 1628-30 and fortified Moscow against an expected attack of the Crimean Tatars in 1637. Pozharsky's last taste of battle came during the ill-fated Smolensk campaign, when he was relegated to secondary roles.