3678 x 5130 px | 31,1 x 43,4 cm | 12,3 x 17,1 inches | 300dpi
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After tension between Russia and Britain in Europe ended with the June 1878 Congress of Berlin, Russia turned its attention to Central Asia. That same summer, Russia sent an uninvited diplomatic mission to Kabul. Sher Ali tried, but failed, to keep them out. Russian envoys arrived in Kabul on 22 July 1878 and on 14 August, the British demanded that Sher Ali accept a British mission too. The amir not only refused to receive a British mission but threatened to stop it if it were dispatched. Lord Lytton, the viceroy, ordered a diplomatic mission to set out for Kabul in September 1878 but the mission was turned back as it approached the eastern entrance of the Khyber Pass, triggering the Second Anglo-Afghan War. A British force of about 40, 000 fighting men was distributed into military columns which penetrated Afghanistan at three different points. An alarmed Sher Ali attempted to appeal in person to the tsar for assistance, but unable to do so, he returned to Mazari Sharif, where he died on 21 February 1879. Throughout history it has been an important trade route between Central Asia and South Asia and a strategic military location. The summit of the Khyber Pass is 5 kilometres (3.1 mi) inside Pakistan at Landi Kotal and it cuts through the northeastern part of the Safed Koh mountains which themselves are a far southeastern extension of the Hindu Kush range. In some versions of the Aryan migration theory, the Indo-Aryans migrated to India via the Khyber Pass. After months of chaos in Kabul, Mohammad Akbar Khan secured local control and in April 1843 his father, Dost Mohammad, returned to the throne in Afghanistan. In the following decade, Dost Mohammad concentrated his efforts on reconquering Mazari Sharif, Konduz, Badakhshan, and Kandahar. Mohammad Akbar Khan died in 1845. During the Second Anglo-Sikh War (1848–49), Dost Mohammad's last effort to take Peshawar failed. By 1854 the British wanted to resume relations with Dost Mohammad, whom they had essentially i
