The United States has begun beefing up its approach to defending its Persian Gulf allies against potential Iranian missile strikes, officials say. The defenses are being stepped up in advance of possible increased sanctions against Iran.The Obama administration has quietly increased the capability of land-based Patriot defensive missiles in several Gulf Arab nations, and one military official said the Navy is increasing the presence of ships capable of knocking out hostile missiles in flight.The officials discussed aspects of the defensive strategy Saturday on condition of anonymity because some elements are classified.The Jerusalem Post could not verify the report.The moves, part of a broader adjustment in the US approach to missile defense, including in Europe and Asia, have been in the works for months. Details have not been publicly announced, in part because of diplomatic sensitivities in Gulf countries, which worry about Iranian military capabilities but are cautious about acknowledging US protection.The White House will send a review of ballistic missile strategy to Congress on Monday that frames the larger shifts. Attention to defense of the Persian Gulf region, a focus on diffuse networks of sensors and weapons and cooperation with Russia are major elements of the study, according to documents obtained by The Associated Press.Russia opposed Bush administration plans for a land-based missile defense site in Eastern Europe, and President Barack Obama’s decision to walk away from that plan last year was partly in pursuit of new capabilities that might hold greater promise and partly in deference to Russia.One military official said the adjustments in the Gulf should be seen as prudent defensive measures designed to deter Iran from taking aggressive action in the region, more than as a signal that Washington expects Iran to retaliate for any additional sanctions. Gen. David Petraeus, the US Central Command chief who is responsible for US military operations across the Middle East, mentioned in several recent public speeches one element of the defensive strategy in the Gulf: upgrading Patriot missile systems, which originally were deployed in the region to shoot down aircraft but now can hit missiles in flight.In remarks at Georgetown Law School on January 21, Petraeus said the US now has eight Patriot missile batteries stationed in the Gulf region – two each in four countries. He did not name the countries, but Kuwait has long been known to have Patriots on its territory.A military official said Saturday that the three other countries are the United Arab Emirates, Bahrain – which also hosts the US Navy’s 5th Fleet headquarters – and Qatar, home to a modernized US air operations center that has played a key role in the Iraq and Afghanistan wars.In related news, the American political Web site Politico.com reported Saturday that CIA director Leon Panetta traveled to Israel last week.According to the report, Panetta met with Prime Minister BinyaminNetanyahu, with Defense Minister Ehud Barak and with Mossad chief MeirDagan. The three, according to an unnamed Israeli official quoted bythe Web site, discussed Iran as well as bilateral relations.