Complex sentence: In 1964 de Silva was actively addressing the political war against the Viet Cong, advocating programs, and writing a CIA report, "Our Counterinsurgency Experiment and its Implications".
Split into simpler sentences: In 1964 de Silva was actively confronting the political war against the Viet Cong, and advocating programs. He wrote a CIA report, "Our Counterinsurgency Experiment and its Implications".