According to Hanna Batatu, however, "the Ba'athists had ample opportunity to gather such particulars in 1958-1959, when the Communists came wholly into the open, and earlier, during the Front of National Unity Years—1957-1958—when they had frequent dealings with them on all levels." In addition, "the lists in question proved to be in part out of date," which could be taken as evidence they were compiled well before 1963.[1] Batatu's explanation is supported by Bureau of Intelligence and Research reports stating that "[Communist] party members [are being] rounded up on the basis of lists prepared by the now-dominant Ba'th Party" and that the ICP had "exposed virtually all its assets" whom the Ba'athists had "carefully spotted and listed."[52] On the other hand, Citino notes that two officials in the U.S. embassy in Baghdad—William Lakeland and James E. Akins—"used coverage of the July 1962 Moscow Conference for Disarmament and Peace in Iraq's leftist press to compile lists of Iraqi communists and their supporters ... Those listed included merchants, students, members of professional societies, and journalists, although university professors constituted the largest single group."[53] Lakeland, a former SCI participant, "personally maintained contact following the coup with a National Guard interrogator," and may have been influenced by his prior interaction with then-Major Hasan Mustafa al-Naqib, the Iraqi military attaché in the U.S. who defected to the Ba'ath Party after Qasim "upheld Mahdawi's death sentences" against nationalists involved in the 1959 Mosul uprising.[54] Furthermore, "Weldon C. Mathews has meticulously established that National Guard leaders who participated in human rights abuses had been trained in the United States as part of a police program run by the International Cooperation Administration and Agency for International Development."[55]