The Rockefeller Foundation played a key role inthe shift from `isolationism' to globalism inUS foreign policy between 1939 and 1945. TheFoundation utilised its considerable financialresources in a conscious and systematic attemptto assist official policymakers and academicsto build a new globalist consensus within thestate and public opinion. The article testsfour theoretical models that have been used todescribe Rockefeller initiatives. It concludesthat a Gramscian analysis provides the mosthelpful way of understanding the Foundation'srole in American foreign affairs.