Eisaku Satō‏ (27 March 1901 – 3 June 1975) was a Japanese politician and the 39th Prime Minister of Japan. He was first elected in December 1964. He was the first Prime Minister to have been born in the 20th century. Satō shared the Nobel Peace Prize with Seán MacBride in 1974. He received the award for representing the Japanese people's will for peace, and for signing the nuclear weapons Non-Proliferation Treaty in 1970.