laid siege to Putivl, but due to the desertion of their Cossack allies they were forced to withdraw. In the autumn of 1633, Commonwealth forces retook Dorogobuzh, an important Russian supply point after its capture the year before. This setback wrecked Russian plans to send reinforcements to Shein's army, although in any event the Russians did not begin to gather a 5,000-strong army for that purpose until January 1634. Also that autumn, Grand Crown Hetman Stanisław Koniecpolski defeated an Ottoman incursion in the south of the Commonwealth, freeing his force to lay siege to the Russian town of Sevsk; although Koniecpolski failed to take the fortress, he tied down large Russian forces, preventing them from moving north towards Smolensk. After the relief of Smolensk in the spring of 1634, the Commonwealth army moved towards the fortress Belaya. However, the siege of Belaya turned to a fiasco although the king manage to capture Vyazma. Treaty of Polyanovka By the spring of 1634, the Russians had not only lost Shein's army but were threatened by Tatar raids that ravaged southern Russia. Patriarch Filaret had died the previous year, and without him the war fervour lessened. Even before the end of 1633, Tsar Michael of Russia was considering how best to end the conflict. Because he had once been elected Tsar of Russia and could realistically lay claim to the Russian throne, King Władysław wanted to continue the war or, because the Polish-Swedish Treaty of Altmark would soon be expiring, ally with the Russians to strike against Sweden. However, the Sejm wanted no more conflict. As Stanisław Łubieński, the Bishop of Płock, wrote two weeks after Shein's surrender: "Our happiness is in remaining within our borders, guaranteeing health and well-being." With neither side keen on prolonging the war, they began negotiating, not for an armistice but for "eternal peace." Talks began on 30 April 1634, and the Treaty of Polyanovka was signed in June, putting an end to hostilities. The treaty confirmed the pre-war status quo, with Russia paying a large war indemnity (20,000 rubles in gold), while Władysław agreed to surrender his claim to the Russian throne and return the royal insignia to Moscow. Jasienica notes that from the Russian perspective it was likely that Władysław's abnegation of his claim was more important, in terms of the subsequent increase in internal stability, than the loss of disputed borderland. Despite not winning militarily,