[3][4] Here he met Danish ambassador Henrik Kauffmann, who would become his friend and later marry Sears' sister-in-law Charlotte MacDougall.

[1][2] In 1960, he was Ambassador and chairman of the United Nations Visiting Mission to East Africa.

[2] Sears was United States' delegate to Ethiopian Emperor Haile Selassie's silver jubilee in 1955.

Two years later, in 1957, he accompanied then-Vice President Richard Nixon as the United States' delegate to the independence celebration of Ghana.

[2] He wrote a book, Years of High Purpose, about U.S. foreign policy towards Africa under John Foster Dulles.