By 1926 the Ikhwan were becoming uncontrollable. They attacked Ibn Sa'ud for introducing such innovations as telephones, automobiles, and the telegraph and for sending his son to a country of unbelievers (Egypt). Despite Ibn Sa'ud's attempts to mollify the Ikhwan by submitting their accusations to the religious scholars ('ulama'), they provoked an international incident by destroying an Iraqi force that had violated a neutral zone established by Great Britain and Ibn Sa'ud between Iraq and Arabia (1927-28); the British bombed Najd in retaliation.
A congress convened by Ibn Sa'ud in October 1928 deposed Ibn Humayd, ad-Dawish, and Ibn Hithlayn, the leaders of the revolt.
The zealots of the brotherhood regarded the Western-influenced modernization pursued by Abd al Aziz as a betrayal of the fundamentals of Islam that had been their raison d'être since the beginning of their association with the House of Saud. Renewed Ikhwan raids against defenseless groups in Iraq incensed the British, who were trying to stabilize the region, and finally compelled Abd al Aziz to force the submission of the Ikhwan.