The elder brother of Dost Mohammad Khan, the chief of the Barakzai, Fateh Khan, took an important part in raising Mahmud Shah Durrani to the sovereignty of Afghanistan in 1800 and in restoring him to the throne in 1809.

Mahmud Shah repaid Fateh Khan's services by having him assassinated in 1818.

The assassination of Fateh Khan Barakzai, incurred the enmity of his tribe and with it began the fall of the Durrani Empire.

After a bloody conflict, Mahmud Shah was deprived of all his possessions except Herat.

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