Colonel David Smiley, who had been seconded to organise the Sultan's Armed Forces, managed to isolate the mountain in autumn 1958 and found a route to the plateau from Wadi Bani Kharus. On 4 August 1957, the British Foreign Secretary gave the approval to carry out air strikes without prior warning to the locals residing in the interior of Oman. Between July and December 1958, the British RAF made 1,635 raids, dropping 1,094 tons and firing 900 rockets at the interior of Oman targeting insurgents, mountain top villages, water channels and crops. On 27 January 1959, the Sultanate's forces occupied the mountain in a surprise operation. Ghalib, Talib and Sulaiman managed to escape to Saudi Arabia, where the Imamate's cause was promoted until the 1970s. The interior of Oman presented the case of Oman to the Arab League and the United Nations. On 11 December 1963, the UN General Assembly decided to establish an Ad-Hoc Committee on Oman to study the 'Question of Oman' and report back to the General Assembly. The UN General Assembly adopted the 'Question of Oman' resolution in 1965, 1966 and again in 1967 that called upon the British government to cease all repressive action against the locals, end British control over Oman and reaffirmed the inalienable right of the Omani people to self-determination and independence.