His main duties as ambassador before and during the Suez Crisis were to keep on good terms with the Eisenhower administration, conveying British policy to them, and to explain US policy to London without losing the confidence of the Eden government. He also had to promote the cause of good Anglo-American relations through speeches to select audiences of American opinion-makers. Makins found himself sometimes in the influential position of having to negotiate between the two governments. It helped, therefore, that he had close personal relationships with the key figures on both sides of the Atlantic.