Following the 1921 Cairo Conference, Lawrence was sent to try and obtain the King's signature to a treaty in exchange for a proposed £100,000 annual subsidy; this attempt also failed. During 1923, the British again tried to settle outstanding issues with Hussein; this attempt also failed and Hussein continued refusing to recognize any of the mandates he perceived as being his domain. In March 1924, having briefly considered the possibility of removing the offending article from the treaty, the UK government suspended negotiations and within six months withdrew support in favour of its central Arabian ally Ibn Saud, who proceeded to conquer Hussein's kingdom.