Complex sentence: A declassified CIA report argues that Khatami was close to Hossein Fardoust and Taqi Alavikia, and that they were part a dowreh, or circle of associates, that was one of the significant elements along with familial relations in political functioning of Iran in the Pahlavi era.
Split into simpler sentences: A declassified CIA report argues that Khatami was close to Hossein Fardoust and Taqi Alavikia, and that they were part of a dowreh, or circle of associates. The dowreh, along with familial relations, was a significant element in the political functioning of Iran in the Pahlavi era.