However, an opposing faction of American progressives, led by ex-president Theodore Roosevelt, ridiculed arbitration as foolhardy idealism, and insisted on the realism of warfare as the only solution to serious disputes. Taft's treaties with France and Britain were killed by Roosevelt, who had broken with his protégé Taft in 1910. They were dueling for control of the Republican Party. Roosevelt worked with his close friend Senator Henry Cabot Lodge to impose those amendments that ruined the goals of the treaties. Lodge thought the treaties impinge too much on senatorial prerogatives. Roosevelt, however, was acting to sabotage Taft's campaign promises. At a deeper level, Roosevelt truly believed that arbitration was a naïve solution and the great issues had to be decided by warfare. The Rooseveltian approach had a near-mystical faith of the ennobling nature of war. It endorsed jingoistic nationalism as opposed to the businessmen's calculation of profit and national interest.