Polish socialist who joined the communists after World War II and who, as minister of foreign affairs, was noted for his “Rapacki Plan” for an atom-bomb-free zone in Europe.

Son of Marian Rapacki, founder of the cooperative movement in Poland, Rapacki studied in France and Italy and became active in organizing socialist youth groups. He fought with the Polish army against the invading Germans and spent 1939–45 in prisoner-of-war camps. In 1948 he joined the Polish United Workers Party. After holding the post of minister for higher education (1950–56), he was appointed minister of foreign affairs. While he supported Soviet policies in the United Nations and backed the positions of other communist countries, Rapacki also tried to keep relations with the West open, diplomatically, culturally, and commercially.

Rapacki gained prominence in 1957 when on October 2 he presented the so-called Rapacki Plan to the UN General Assembly. It would have established a denuclearized zone in Europe. On Dec. 20, 1968, Rapacki was removed as foreign minister for his refusal to support anti-Semitic measures that followed earlier outbreaks of student unrest in Poland.