Obama to push for Gulf missile shield at U.S. summit U.S. President Barack Obama is expected to use a summit with Gulf allies to push for a region-wide defence system to guard against the threat of Iranian missiles as he seeks to ease fears over a potential nuclear deal with Tehran CURRENT DEFENCE CAPABILITIES Patriot missile batteries Early warning radar (U.S.) Sea-based missile defences (U.S. warships on patrol) THAAD missiles* (on order) Potential key targets (U.S. bases and oil facilities) Patriot PAC-3 anti-ballistic missile defence system IRAN IranŐs arsenal of advanced ballistic missiles could potentially carry nuclear warheads, and take just minutes to reach Gulf countries IRAQ Riyadh SAUDI ARABIA The Gulf Patriot missile coverage 200km 125 miles KUWAIT *Terminal High Altitude Area Defence BAHRAIN QATAR OMAN UAE Source: Centre for Strategic and International Studies Picture: Lockheed Martin © GRAPHIC NEWS