Roger Hollis in 1956 and remaining in that post until his retirement in 1965. After Kim Philby's flight from Beirut to Moscow in 1963, rumours began to circulate that Hollis had alerted him to his impending arrest. Hollis was criticised for not alerting John Profumo, the War Secretary in Prime Minister Harold Macmillan's Conservative government, that he might have become entangled with a Soviet spy ring through his friendship with Stephen Ward, and his affair with showgirl Christine Keeler, who was introduced by Ward to Profumo. Soviet Naval Attache Eugene Ivanov was also involved with Keeler at this time, in the early
Profumo affair Profumo about the deployment of nuclear weapons, she did not do so. Profumo was equally adamant that no such discussions took place. On 9 August, Profumo was interviewed informally by Sir Norman Brook, the Cabinet Secretary, who had been advised by Hollis of Profumo's involvement with the Ward circle. Brook warned the minister of the dangers of mixing with Ward's group, since MI5 were at this stage unsure of Ward's dependability. It is possible that Brook asked Profumo to help MI5 in its efforts to secure Ivanov's defection—a request which Profumo declined. Although Brook did not indicate knowledge of Profumo's