Gaffney attended the Edmund A. Walsh School of Foreign Service at Georgetown University, where he graduated with a Bachelor of Science in Foreign Service in 1975. In 1978, he received an MA in International Studies from Johns Hopkins University's Paul H. Nitze School of Advanced International Studies.
Gaffney attended the Edmund A Walsh School of Foreign Service at Georgetown University where he graduated with a Bachelor of Science in Foreign Service in 1975 In 1978 he received an MA in International Studies from Johns Hopkins University's Paul H Nitze School of Advanced International Studies