Quitting nuclear deal: How Iran could respond Any U.S. withdrawal from the Iran nuclear agreement could prompt Tehran to retaliate by undermining the interests of Washington and its allies in the Middle East SYRIA Israel says Iran has recruited at least 80,000 Shia paramilitary fighters to shore up government of President Bashar al-Assad If nuclear deal falls through, Iran will have little incentive to stop Shia militia allies in Syria from carrying out attacks against Israel LEBANON Iran-backed Hezbollah and its allies won over half of seats in May parliamentary election Iran could pressure Hezbollah leader Hassan Nasrallah to isolate its political opponents and destabilize Lebanon YEMEN U.S. and Saudi officials say Iran is supplying rebel Houthi fighters with missiles Iran could increase support for Houthis, possibly provoking military response from Saudi Arabia and United Arab Emirates IRAN Iranian President Hassan Rouhani has warned U.S. to stay in nuclear deal or face “severe consequences” Iran is threatening to withdraw completely from Non-Proliferation Treaty, designed to stop spread of nuclear weapons IRAQ Al-Fatah coalition, led by pro-Iranian former militia leader Hadi al-Amiri, comprises political wings of Shia militia groups of Popular Mobilization Forces (PMF). Influential faction vying for power in upcoming parliamentary elections Iran could encourage PMF factions to step up attacks against some 5,200 U.S. troops that remain in Iraq IRAN IRAQ YEMEN SAUDI ARABIA TURKEY ISRAEL JORDAN UAE QATAR OMAN BAHRAIN KUWAIT SYRIA Tehran 250 miles 400km © GRAPHIC NEWS Source: Reuters Pictures: Newscom, Getty Images