Iran's foreign policy is the product of many, and sometimes competing, factors: the ideology of Iran's Islamic revolution; Iranian leadership's perception of threats to the regime and to the country; long-standing Iranian national interests; and the interaction of the Iranian regime's various factions and constituencies. Some experts assert that the goal of Iran's foreign policy is to overturn a power structure in the Middle East that Iran asserts favors the United States, Israel, and Sunni Muslim Arab regimes. Iran characterizes its support for Shiite and other Islamist movements as support for an "oppressed" underclass. Others interpret Iran's foreign policy as more practical than ideological-an attempt to protect Iran from U.S. or other efforts to invade or intimidate Iran or to change its regime. Iran employs a number of different tools in pursuing its foreign policy. Some Iranian policy tools are similar to those used by the United States and its allies-traditional diplomacy, the promotion of Iran's values and interests in international meetings, and supporting the election or political prospects of leaders and groups friendly toward Iran. Other tools Tehran uses are more problematic to U.S. policy: Iran provides direct material support to armed groups, some of which use terrorism to intimidate or retaliate against Israel or other regional opponents of Iran. Iran's armed support to Shiite-dominated allied governments, such as those of Syria and Iraq, have aggravated challenges from Sunni insurgent groups by fueling Sunni popular resentment. Iran's foreign policy overwhelmingly focuses on the Near East region, including on U.S. operations, allies, and activities in that region. It is that region where all the various components of Iran's foreign policy interact. Iran's foreign policy also seems to be directed at influencing the policies and actions of big powers, such as those in Europe as well as Russia, that are active in the Near East-either as partners or antagonists of U.S. interests in that region. Much of Iran's foreign policy also appears intended to thwart or at least mitigate the effects of international sanctions imposed on Iran. Some aspects of Iran's foreign policy might yet shift as the July 14, 2015, nuclear agreement between Iran and the United States and its partner negotiating countries (the Joint Comprehensive Plan of Action, JCPOA) is implemented. Under the JCPOA, many of the international sanctions that have hobbled Iran's economy are to be lifted, removing at least some obstacles to finalizing a number of pending joint regional energy and transportation projects. Some experts assess that the JCPOA might cause Iran to try to put aside longstanding animosities. Iran's elected President Hassan Rouhani has stated that the JCPOA is "a beginning for creating an atmosphere of friendship and co-operation with various countries." However, some experts and officials argue that Iran's foreign policy will not change significantly, and that sanctions relief will provide Iran with more financial resources to fund policies and factions that most challenge the interests of the United States and its allies. Iran's Supreme Leader, Grand Ayatollah Ali Khamene'i, continues to assert that Iran's foreign policy must not change as a consequence of the agreement. Key hardline institutions, such as the Islamic Revolutionary Guard Corps (IRGC), appear to be moving to thwart any broad realignment by Iran or any compromises of its core foreign policy goals. [ABSTRACT FROM AUTHOR]