On June 24, 1610, the Russian forces suffered their major defeat in the Battle of Klushino, mainly due to the mismanagement of Dmitry Shuysky. On June 27, the group of Seven Boyars deposed Tsar Vasily and made him a monk against his will to ensure his political death. In September 1610, the Seven Boyars, who now constituted the provisional government, handed Vasily and other members of the Russian royalty over to the Polish forces.