An Iranian-born man faces up to five years in federal prison for conspiring to violate a US embargo by providing Iran with military aircraft parts. Hassan Keshari pleaded guilty Monday to a single count in Miami federal court. Prosecutors say Keshari, a 48-year-old naturalized US citizen who was living in California, was a middleman between Iranian buyers and a supplier based in South Florida. The supplier also has been charged and is scheduled to go to trial in May. Keshari lawyer David O. Markus says his client is cooperating with investigators and wants to get the matter behind him. The parts were for such aircraft as the F-14 fighter jet, the C-130 cargo plane and the AH-1 attack helicopter.