For example, in terms of the Monroe Doctrine, America had to prevent European incursions in the Western Hemisphere. But there was more, as he expressed in his famous Roosevelt Corollary to the Monroe Doctrine: the U.S. had to be the policeman of the region because unruly, corrupt smaller nations had to be controlled, and if United States did not do it, European powers would in fact intervene and develop their own base of power in the hemisphere in contravention to the Monroe Doctrine.[369]

Roosevelt was a realist and a conservative.[370] He deplored many of the increasingly popular idealistic liberal themes, such as were promoted by William Jennings Bryan, the anti-imperialists, and Woodrow Wilson. Kissinger says he rejected the efficacy of international law. Roosevelt argued that if a country could not protect its own interests, the international community could not help very much. He ridiculed disarmament proposals that were increasingly common. He saw no likelihood of an international power capable of checking wrongdoing on a major scale. 