24 A PILGRIMAGE FOR PEACE Ridge was attacked by tribesmen in great force led by the Mad Mullah who proclaimed a Jehad (holy war) against the British. Almost simultaneously there was invasion of the Peshawar valley across the Kabul river by a combined lashkar in which Afridis of the Khyber Pass joined. It resulted in the despatch of the Tirah expedition into the llohmand territory to " chastise " the Afridis. The grow- ing conviction that it was physically difficult to conquer and hold Afghanistan without incurring ruinous expendi- ture in men and money, " which sound strategy suggested ought to be thrown on the enemy ", led to a gradual abandonment of the Forward Policy and the substi- tution of a policy of cultivating friendship with a strong; stable and independent Afghanistan under a ruler pre- pared to give control of the independent tribes on the borders to the British Government. Accordingly, Amir Abdur Rahman was elevated to the Kabul throne which he held for many years, supported by British arms and a handsome subsidy from the India Government towards the defence of his kingdom. The policy held good during the reign of his successor, Amir Habibur Rahman, who was murdered in 1919. The holding of the " Scientific Frontier Line ", however, brought in its own complications. By bringing the British power into direct touch with the trans-border tribes, it virtually enabled the Amir of Afghanistan to transfer his headache to his erstwhile an- tagonist., the British power. Under the treaty of Gandamak with Afghanistan and " political arrangement " (another name for coercion) with border tribes, the British Gov- ernment had secured to themselves the control of the passes and territorial rights in respect of two military routes from India to Kabul, one by the Khyber, the other by the Kurram. This in its turn led to a steady pene- tration into the tribal territory which gave to the tribes- men the "blessing" of a system of metalled roads and strategic railways strangely at variance with their econo- mic and political backwardness. These roads could easily be the envy of any civilized part of the West, and the strategic railways, particularly those bevond the