A scholar in the areas of international law and human rights, Professor Boyle received a J.D. degree magna cum laude and A.M. and Ph.D. degrees in political science from Harvard University. Prior to joining the faculty at the College of Law, he was a teaching fellow at Harvard and an associate at its Center for International Affairs. He also practiced tax and international tax with Bingham, Dana & Gould in Boston.

He has written and lectured extensively in the United States and abroad on the relationship between international law and politics. His eleventh  book, Breaking All the Rules: Palestine, Iraq, Iran and the Case for Impeachment was recently published by Clarity Press. His Protesting Power: War, Resistance and Law (Rowman & Littlefield Inc. 2007)  has been used successfully in  anti-war protest trials. In the September 2000 issue of the prestigious The International History Review, Professor Boyle's Foundations of World Order: The Legalist Approach to International Relations (1898-1922) was proclaimed as "a major contribution to this reinterrogation of the past" and "required reading for historians, political scientists, international relations specialists, and policy-makers." That book was translated into Korean and published in Korea in 2003 by Pakyoungsa Press.

As an internationally recognized expert, Professor Boyle serves as counsel to  Bosnia and Herzegovina and to  the Provisional Government of the State of Palestine.  He also represents two associations of citizens within Bosnia  and has been instrumental in developing the indictment against Slobodan Milosevic for committing genocide, crimes against humanity, and war crimes in Bosnia and Herzegovina.

Professor Boyle is Attorney of Record for the Chechen Republic of Ichkeria, conducting its legal affairs on a worldwide basis. Over his career, he has represented national and international bodies including the Blackfoot Nation (Canada), the Nation of Hawaii,  and the Lakota Nation, as well as numerous individual death penalty and human rights cases. He has advised numerous international bodies in the areas of human rights, war crimes and genocide, nuclear policy, and bio-warfare.

From 1991-92, Professor Boyle served as Legal Advisor to the Palestinian Delegation to the Middle East Peace Negotiations. He also has served on the Board of Directors of Amnesty International, as well as  a consultant to the American Friends Services Committee, and on the Advisory Board for the Council for Responsible Genetics. He drafted the U.S. domestic implementing legislation for the Biological Weapons Convention, known as the Biological Weapons Anti-Terrorism Act of 1989, that was approved unanimously by both Houses of the U.S. Congress and signed into law by President George H.W. Bush. That story is told in his book Biowarfare and Terrorism (Clarity Press: 2005).

In 2001 he was selected to be the Dr. Irma M. Parhad Lecturer by the Faculty of Medicine at the University of Calgary in Canada. In 2007 he became  the Bertrand Russell Peace Lecturer at McMaster University in Canada. Professor Boyle is listed in the current edition of  Marquis' Who's Who in America.