[1] Lee was appointed charge d'affaires at the Singaporean embassy in Cambodia from 1970 to 1973 during the Cambodian Civil War.
[1] In 1990, Lee was part of the delegation sent to the People's Republic of China to establish official diplomatic relations with the PRC.
[1] According to Singaporean diplomat Tommy Koh, Lee was a supporter of East Timor and its development during the years following independence in 2002.
[1] In 2012, East Timorese President Jose Ramos-Horta awarded Lee the Order of Timor-Leste, the country's highest honor.
[1][2] He later served on the boards of directors for Creative Malay Arts and Culture and the Puan Noor Aishah Intercultural Institute.