On returning to the US, Wadsworth was nearly immediately assigned to be Consul General, and then the first Ambassador to Syria and Lebanon, a political move that strengthened those countries against claims by Vichy France. After the war, he was made the first Ambassador to Iraq, previously served only by a lower-ranking Minister Plenipotentiary. He was subsequently in his career made ambassador to Turkey, Czechoslovakia,[3] and then Saudi Arabia, and Yemen.[4]