III. The purpose of this treaty is strictly defensive, and the object is that from their mutual assistance both states should derive stability and strength; and this treaty has only been concluded for the purpose of repelling the aggressions of enemies; and the purport of the word aggression in this treaty is, an attack upon the territories of another state. The limits of the territory of the two states of Russia and Persia shall be determined according to the admission of Great Britain, Persia, and Russia.
IV. It having been agreed by an article in the preliminary treaty concluded between the high contracting parties, that in case of any European nation invading Persia, should the Persian Government require the assistance of the English, the Governor-General of India, on the part of Great Britain, shall comply with the wish of the Persian Government, by sending from India the force required, with officers, ammunition, and warlike stores, or, in lieu thereof, the English Government shall pay an annual subsidy, the amount of which shall be regulated in a definitive treaty to be concluded between the high contracting parties; it is hereby provided, that the amount of the said subsidy shall be two hundred thousand (200,000) tomauns annually. It is further agreed, that the said subsidy shall not be paid in case the war with such European nation shall have been produced by an aggression on the part of Persia; and since the payment of the above subsidy will be made solely for the purpose of raising and disciplining an army, it is agreed that the English minister shall be satisfied of its being duly applied to the purpose for which it is assigned.
V. Should the Persian Government wish to introduce European discipline among their troops, they are at liberty to employ European officers for that purpose, provided the said officers do not belong to nations in a state of war or enmity with Great Britain.
VI. Should any European power be engaged in war with Persia when at peace with England, His Britannic Majesty engages to use his best endeavours to bring Persia and such European power to a friendly understanding. If, however, His Majesty’s cordial interference should fail of success, England shall still, if required, in conformity with the stipulations in the preceding articles, send a force from India, or, in lieu thereof, pay an annual subsidy of two hundred thousand (200,000) tomauns for the support of a Persian army, so long as a war in the supposed case shall continue, and until Persia shall make peace with such nation.
VII. Since it is the custom of Persia to pay the troops six months in advance, the English minister at that court shall do all in his power to pay the subsidy in as early instalments as may be convenient.
VIII. Should the Afghans be at war with the British nation, His Persian Majesty engages to send an army against them in such manner and of such force as may be concerted with the English Government. The expenses of such an army shall be defrayed by the British Government, in such manner as may be agreed upon at the period of its being required.
IX. If war should be declared between the Afghans and Persians, the English Government shall not interfere with either party, unless their mediation to effect a peace shall be solicited by both parties.
X. Should any Persian subject of distinction, showing signs of hostility and rebellion, take refuge in the British dominions, the English Government shall, on intimation from the Persian Government, turn him out of their country, or, if he refuse to leave it, shall seize and send him to Persia.
Previously to the arrival of such fugitive in the English territory, should the governor of the district to which he may direct his flight receive intelligence of the wishes of the Persian Government respecting him, he shall refuse him admission. After such prohibition, should such person persist in his resolution, the said governor shall cause him to be seized and sent to Persia; it being understood that the aforesaid obligations are reciprocal between the contracting parties.
XI. Should His Persian Majesty require assistance from the English Government in the Persian Gulf, they shall, if convenient and practicable, assist him with ships of war and troops. The expenses of such expedition shall be accounted for and defrayed by the Persian Government, and the above ships shall anchor in such ports as shall be pointed out by the Persian Government, and not enter other harbours without permission, except from absolute necessity.