Complex sentence: In 1978, he moved to the United States with the help oh his uncle Soltan Mohammad Etemad pursuing his studies in Mechanical Engineering and after the Iranian Revolution, he returned and became involved in intelligence gathering.
Split into simpler sentences: In 1978, he moved to the United States with the help of his uncle, Soltan Mohammad Etemad, to pursue his studies in Mechanical Engineering. After the Iranian Revolution, he returned and became involved in intelligence gathering.