Rohan completed his undergraduate studies at the University of Queensland in Brisbane, Australia completing a Bachelor of Arts with an extended major in political science and a Bachelor of Laws. He is an admitted lawyer who, prior to postgraduate studies, worked as an adviser to an Australian cabinet minister, working on legal, constitutional, parliamentary, and security policy issues. He has also worked as a Special Adviser in the 10 Downing Street Policy Unit.

Leanne’s doctoral thesis aims to better understand how military alliances form and implement strategy, especially in periods of great uncertainty, by examining the process of NATO's adoption of a new strategic concept after the end of the Cold War. Relying on archival material in the United States, the United Kingdom, France, and NATO headquarters in Brussels, she challenges prevailing assumptions about the respective roles of headquarters staff and the Alliance’s most powerful members in an effort to shed light on strategy formation in consensus-driven institutions.