عبد الرحمن عارف
Under the Presidency of Abdul Rahman Arif, who assumed power following the death of his brother Abdul Salam Arif in April 1966, the United States (U.S.) and Iraq developed closer ties than at any point since the 14 July Revolution of 1958. The Lyndon B. Johnson administration favorably perceived Salam Arif's proposal to partially reverse ousted Prime Minister Abd al-Karim Qasim's nationalization of the United Kingdom (U.K.)-based Iraq Petroleum Company (IPC)'s concessionary holding in July 1965 (American firms owned 23.75% of the IPC), although the resignation of six Nasserist cabinet members and widespread disapproval among the Iraqi public forced him to abandon this plan, as well as pro-Western lawyer Abd al-Rahman al-Bazzaz's brief tenure as prime minister (which straddled the presidencies of both Arif brothers); Bazzaz attempted to implement a peace agreement with Iraqi Kurdish rebels following a decisive Kurdish victory at the Battle of Mount Handren in May 1966. Arif was considered "one of the few forces of moderation" in Iraq, having established a friendship with U.S. ambassador Robert C. Strong prior to assuming the presidency and making a number of friendly gestures to the U.S. between April 1966 and January 1967. At Arif's request, President Johnson met five Iraqi generals and Iraqi ambassador Nasir Hani in the White House on 25 January 1967, reiterating his "desire to build an ever closer relationship between [the] two governments." According to Johnson's National Security Adviser, Walt Whitman Rostow, the NSC even contemplated welcoming Arif on a state visit to the U.S., although this proposal was ultimately rejected due to concerns about the stability of his government. Prior to the outbreak of the Six-Day War, Iraqi Foreign Minister Adnan Pachachi met with a number of U.S. officials to discuss the escalating Middle East crisis on 1 June, including U.S. ambassador to the United Nations (UN) Arthur Goldberg, Under Secretary of State for Political Affairs Eugene V. Rostow, Secretary of State Dean Rusk, and President Johnson himself. The political atmosphere engendered by the costly Arab defeat prompted Iraq to break relations with the U.S. on 7 June, and ultimately ensured the collapse of Arif's relatively moderate government.