On June 10th , 1951 when the provisional board stationed itself in Khorramshahr , a mission headed by Basil Jackson the deputy chairman of the company arrived in Iran with proposals that were turned down because they were contradicting the oil nationalization law . The British government filed a complaint with the International Tribunal at the Hague ,which issued an interim ruling for the continuation of the operation of oil installations , and called on the government of Iran to avoid intervening in the affairs of the company , to allow the court to study the case and issue its final verdict . Iran did not accept the ruling , because it did not recognize the court’s jurisdiction over the case . Pursuant to the failure of The Jackson Mission , the U.S president Truman dispatched one of its senior advisors named “ Harriman “ for mediation to Tehran . Another mission headed by a British minister Stokes arrived in Tehran at the same time . Ensuing talks also failed and Harriman left Tehran following Stokes . The British government , which had plans to resort to military forces and occupy Khouzastan and Abadan , dispatched its paratroopers to Cyprus and deployed several warships in Abadan area waters . The move was countered by U.S opposition , which feared the Soviet intervention in the situation.