WikiLeaks has released secret U.S. diplomatic cables that show the U.S. government has refused to help the United Arab Emirates investigate the assassination of a Hamas military commander in Dubai last January. Dubai officials have long suspected the Israeli intelligence agency Mossad was behind the killing of Mahmoud al-Mabhouh. The leaked cables show that the United States rejected a formal request from UAE government to provide credit card information about the suspects in the killing. The suspected assassins were using credit cards issued by the Iowa-based Meta Bank.