Murphy spent the year following law school participating in Syracuse University's Afro-Asia Public Service Fellowship Program working in India with the Indian government.

Outside the USA he taught in Aix-en-Provence, London, Mexico City, Paris and Haifa.

[3] For the American Bar Association he served as an Alternate Observer at the United States Mission to the United Nations and a member of its Council on International Law and participated in the Francis Shattack Security & Peace Initiative.

[3] He was an honorary Vice President of the American Branch of the International Law Association.

In 2010 Murphy's employer, Villanova University, held a symposium to honor his forty-year tenure as a legal scholar.