 It took four months and an enormous ransom to recover the monarch from captivity.A fragile peace was broken in 1467, when Ibrahim of Kazan came to the throne and Ivan III of Russia supported the claims of his ally or vassal Qasim Khan.Ivan's army sailed down the Volga, with their eyes fixed on Kazan, but autumn rains and rasputitsa ("quagmire season") hindered the progress of Russian forces.