 After the suspension of American military aid to Pakistan, Iran was reported to have purchased ninety F-86 Sabrejet fighter planes from West Germany, and subsequently delivered them to Pakistan.Although Pakistan's decision to join the Central Treaty Organization (CENTO) in 1955 was largely motivated by its security imperatives regarding India, Pakistan did not sign on until Iran was satisfied that the British government was not going to obstruct the nationalization of British oil companies in Iran.According to Dr. Mujtaba Razvi, Pakistan likely would not have joined CENTO had Iran been negatively affected during these events.