In 1950, President of the United States Harry S. Truman nominated Hare as United States Ambassador to Saudi Arabia and, after Senate Confirmation, he was appointed on September 20, 1950.[1] Ambassador Hare presented his credentials to the Saudi government on October 24, 1950. Hare was ambassador just as oil started to flow in Saudi Arabia.[2] At Jeddah, he established a relationship with Ibn Saud of Saudi Arabia, though he did not deal directly with oil issues as Aramco handled its own relations with the Saudi royal family.[2] However, Hare was tasked with convincing the Saudis to allow the U.S. access to military facilities at Dhahran.[3] He was successful at negotiating an extended-stay agreement in 1952; as part of the deal to allow U.S. troops to remain in Dhahran, the U.S. provided Saudi Arabia with a number of planes that formed the foundation of what would become the Royal Saudi Air Force.[3] During the 1953 dispute over ownership of the Buraimi Oasis, Hare convinced the British and Saudis to agree to a standstill agreement, though he was ultimately unable to defuse the situation.[3]