The US Foreign Policy Structure; Internal Roots of opposition to the Joint Comprehensive Plan of Action (Barjam)

American foreign policy is a complex and multi-layered issue normally shaped as a result of a long process in the form of bureaucratic competitions inside the political structure. In foreign policy studies, the role of a broker is usually analyzed inside such a process and in interaction with other forces and factors. One of the important US national security and foreign policy decisions during the presidency of Barack Obama (201216-) was Iran Nuclear Deal known as the Joint Comprehensive Plan of Action (Barjam) as the result of nuclear talks between Iran and P51+. Despite Obama government’s internal consensus over nuclear talks with Iran, there were oppositions to the nuclear talks and Barjam which continued in different forms and arguments. Nuclear talks with Iran had started before Obama in George Bush’s presidency. This brings up the question of “what is the republicans and some American structural forces’ main reason of opposing nuclear talks and Barjam?” This article suggests the shift in “balance of power” and regional conditions after Barjam to Iran’s interest as the main reason of these oppositions. This hypothesis sheds light on the US main reasons of opposition to Iran nuclear program and their attempts to sabotage nuclear talks and Barjam.