 Convinced that the Prince of Condé was responsible for the uprising, the king summoned him to court and had him arrested on 31 October 1560.In foreign policy, Francis II continued peace efforts begun by Henry II with the signing of the Peace of Cateau-Cambrésis in April 1559, which ended 40 years of war between France and the Habsburg empire.At the expense of its influence in Europe, France continued to restore lands conquered over the previous 40 years.