WASHINGTON, August 11, 2006 (RFE/RL) -- The U.S. State Department's August 4 announcement that it was imposing sanctions on the two Russian defense firms set off a firestorm in Moscow. It also sent many U.S. enterprises running to review their Russian contracts. The sanctions were leveled against a total of seven firms -- in Russia, North Korea, India, and Cuba -- for their dealings with Iran. U.S. government agencies and private firms are facing a two-year block on working with any of the targeted companies on projects that could be interpreted as having a military function.