On the conclusion of the treaty, Lord Dalhousie wrote to Edwardes: 'I congratulate you and myself and all else concerned on this successful issue of the negotiations, which have now lasted just a year.' This treaty of March, 1855, was only preliminary to that for the ratification of which the Amir came in person to Peshawar the following year.
Towards the end of 1855 Dost Mahomed found himaelf in considerable difficulties, and appealed to us for assistance.

A revolt had occurred at Herat, and a Persian army was preparing to besiege that fortress; the chiefs and people of Kandahar were disaffected; and the province of Balkh was threatened with invasion both by the King of Bokhara and by Turkoman hordes.

The Amir looked upon Herat as an integral part of the Afghan dominions, and was very desirous of re-establishing his authority over that place and preventing its falling into the hands of the Persians; but he felt himself too weak to have any hope of success without help from us in men and money.

It was, therefore, Dost Mahomed's interest to convince the British Government that the Shah had infringed the conditions of an engagement entered into with us in 1853, under which Persia abandoned all claim to Herat.

The Amir thus hoped to establish a quarrel between England and Persia for his own benefit, and to secure our assistance against the latter power.