In the world of defense spending, and defense investing, everything old is becoming new again — aircraft carriers especially. Over the past several months, defense news headlines have been dominated by reports that everyone from India to Singapore to Japan seems to be busily building aircraft carriers. China, in particular, is said to be in the process of building multiple carriers simultaneously. Now, could the Islamic Republic of Iran be next in line to join the aircraft carrier-owning club? According to multiple sources, Iran recently completed work on a two-thirds scale model boat resembling the American Nimitz-class nuclear-powered aircraft carrier. Curiously, the new vessel appears to come complete with airplanes on deck, and even has the “68″ navy designation for the USS Nimitz (CVN-68) painted on its deck. Why? More