Complex sentence: In the run up to the 2003 invasion of Iraq, Shulsky was the Director of the Office of Special Plans (OSP), which served as a source of intelligence, and was hired and overseen by Douglas Feith and William Luti.
Split into simpler sentences: In the run up to the 2003 invasion of Iraq, Shulsky was the Director of the Office of Special Plans (OSP), which served as a source of intelligence. He was hired and overseen by Douglas Feith and William Luti.