Afghan/Pakistan border (Durand Line)

The Durand Line is the term for the poorly marked 2,640 kilometer (1,610 mile) border between Afghanistan and Pakistan.

After being defeated in two wars against Afghans, the British succeeded in 1893 in imposing the Durand Line dividing Afghanistan and what was then British India (now the Northern Areas, North-West Frontier Province, Federally Administered Tribal Areas and Balochistan areas of Pakistan). Named for Sir Mortimer Durand, the foreign secretary of the British Indian government, it was agreed upon by representatives of both Afghanistan and the British Empire, but deeply resented by the Afghan Emir Abdur Rahman Khan. One of the two representatives of the Afghan government was the Ahmadi Sahibzada Abdul Latif of Khost. The border was drawn intentionally to cut through the Afghan tribes whom the British feared and may have tried to disunite, and today about 28 million Pashtuns are found on the Pakistan side of the line, and perhaps half that amount on the Afghan side. wikipedia