Complex sentence: After his work in the Pentagon, he received a Congressional appointment to the Deutch Proliferation Commission, which completed its report in July 1999 and served as a member of the Central Intelligence Agency's Senior Advisory Panel from 1995 to 1996.
Split into simpler sentences: After his work in the Pentagon, he received a Congressional appointment to the Deutch Proliferation Commission, which completed its report in July 1999. He also served as a member of the Central Intelligence Agency's Senior Advisory Panel from 1995 to 1996.