The Treaty of Gandamak also required that Afghanistan sever its relationships with the independent tribes of the tribal regions of Afghanistan, those lying on the far side of the Durand Line. These tribes had previously been a substantial source of military power for the Afghanistan throne. When Habibullah became Emir he was pressured by the British government to ratify the Treaty of Gandamak and, although he did so by proclamation in 1905, he would not commit to withdraw Afghan influence from the British side of the Durand Line, or to sever Afghanistan's relationship with the tribes in that area.