On 25 July 1958, as a result of the ongoing war and British government's aim to be "less visible" in the Middle East in the post-Suez world, letters were exchanged between the sultan and the British leaders and subsequently an assistance in economic development agreement was signed, which consisted of strengthening the Sultan of Oman's Armed Forces (SAF) by attaching British officers to lead small units and to head the SAF as a whole. The war lasted 5 years until the Sultan of Oman's Armed Forces, with much difficulty and following direct support of soldiers from the British Special Air Service, 1st Battalion of the Cameronions, a troop of the &lt;a href="15th/19th%20The%20King%27s%20Royal%20Hussars"&gt;15/19 Hussars&lt;/a&gt;, RAF fighter jets and a squadron of Ferret armoured cars, put down the Jebel Akhdar War in 1959, and Imam Ghalib Alhinai managed to escape to Saudi Arabia. He continued for a short time to lead a temporary government-in-exile from Dammam (Saudi Arabia) and established an Imamate Office in Cairo (Egypt) while the fighting continued in Oman.