Complex sentence: Manucher Ghorbanifar (nickname Gorba) is an expatriate Iranian arms dealer best known as a middleman in the Iran-Contra Affair during the Ronald Reagan presidency.
Split into simpler sentences: Manucher Ghorbanifar (nickname Gorba) is a well known expatriate Iranian arms dealer. He is best known as a middleman in the Iran-Contra Affair during the Ronald Reagan presidency.