Yemen Sanctions Proxies Houthi rebels Retaliation Retaliatory Strikes Prisoner Swap Israel Middle East Major Prisoner Swap Deal Frozen Assets Funds Coordination with Hamas Financial Aid Timeline Coup Shah's Regime Iranian Revolution Islamic Republic U.S. Embassy in Tehran Iraq Iran-Contra Affair President Mohammad Khatami Axis of Evil Comprehensive Negotiation Offer JCPOA General Qasem Soleimani Joe Biden Indirect Negotiations Frozen Funds Syria Iranian Revolutionary Guard Corps Attacks Responsibility Militant Backed Attacks Militant Backed by Iran Houthi Rebels Qassem Soleimani Hamas Military Attack Threats Retaliatory Actions Proxy groups Militia Iranian Elections Nuclear Deal Gaza Tensions Agreements Nuclear Program Diplomacy Sticking Points Diplomatic Ties Release of U.S. citizens Support for Hamas