Started his research career in the think tank sector, Dr. Lee Chee Leong (Karl) is attracted to the rise of non-traditional diplomacy in the international order today. Such appeal has taken Dr. Lee into new research horizons that started with his Monash University's doctoral research on the Chinese sub-state diplomacy in China-ASEAN economic cooperation. With constructive supervision by Professor Helen Nesadurai and Associate Professor Kuik Cheng Chwee, Dr. Lee completed his doctoral thesis that unravels how a faraway and least developed sub-state of Guangxi managed to overcome its own hurdles, navigate the complexities within the Chinese state and become the frontline actor in China-ASEAN economic cooperation.  Following his doctoral completion, Dr. Lee's research on non-traditional diplomacy has expanded into Taiwan’s quasi-state diplomacy in Southeast Asia. Such quest has led him spending at great length in comprehending the concept of soft power, a concept that finds its relevance to Taiwan, which has no official diplomatic with Southeast Asia but is heavily connected to the region and has to rely on soft power in its engagements with these Southeast Asian nations. By comparing different case studies of Taiwan's quasi-state engagement within Southeast Asia, Dr. Lee has developed the soft power diffusion process to explain how such phenomenon operates in the real world. His ongoing and incoming research projects include Unpacking ‘De-risking’ China