Institutional relationships in foreign policy constitute a paradox. On the one hand, there are aspects of foreign policymaking that necessarily engage multiple branches of government and a multiplicity of actors. Indeed, there is a complexity to foreign policy that is bewildering, in terms of both substance and process. On the other hand, foreign policymaking can sometimes call for nothing more than for the president to make a formal decision, quickly endorsed by the legislative branch. This section will explore the institutional relationships present in U.S. foreign policymaking.