In August 1940 , Jebb was appointed to the Ministry of Economic Warfare with temporary rank of Assistant Under-Secretary . Later , he was appointed Chief Executive Officer of the Special Operations Executive . In February 1942 , with a change of Minister of Economic Warfare , Jebb was relieved of this appointment and returned to the Foreign Office . He was appointed Head of the Reconstruction Department and in 1943 was made a Counsellor . In this capacity he attended numerous international conferences , including those at Tehran , Yalta , Dumbarton Oaks , and Potsdam
Yalta
Yalta Conference
Gladwyn Jebb