Mahathir is an alumnus of the National University of Singapore. He studied at the university's King Edward VII College of Medicine between 1947 and 1953. When the university granted him and his wife honorary degrees in November 2018, he said, "I will always value my stay in Singapore for nearly six years." Singapore's long-time prime minister Lee Kuan Yew was also a student at the National University of Singapore. However, relations with Singapore under Mahathir's tenure were stormy. Many disputed issues raised during his administration have not been resolved.