Gary Wilson is Principal Lecturer and Undergraduate Programme Leader at Liverpool John Moores University. His main research interests centre on the UN collective security system, the use of force in international law, self-determination and constitutional reform. He has published widely in these areas, and in addition to the first edition of The United Nations and Collective Security, he is the author of Constitutional Reform and Brexit, also published by Routledge. Gary is also editor-in-chief of the peer-reviewed journal Liverpool Law Review.