It has always been held that that right belongs only to the Governments who have been parties to the original instrument.
The despatches of Prince Gortschakoff appear to assume that any one of the Powers who have signed the engagement may allege that occurrences have taken place which in its opinion are at variance with the provisions of the Treaty; and, although this view is not shared nor admitted by the co-signatory Powers, may found upon that allegation, not a request to those Governments for the consideration of the case, but an announcement to them that it has emancipated itself, or holds itself emancipated, from any stipulations of the Treaty which it thinks fit to disprove. Yet it is quite evident that the effect of such doctrine, and of any proceeding which, with or without avowal, is founded upon it, is to bring the entire authority and efficacy of Treaties under the discretionary control of each one of the Powers who may have signed them; the result of which would be the entire destruction of Treaties in their essence. For whereas their whole object is to bind Powers to one another, and for this purpose each one of the parties surrenders a portion of its free agency, by the doctrine and proceeding now in question one of the parties, in its separate and individual capacity, may bring back the entire subject into its own control, and remains bound only to itself.
Accordingly, Prince Gortschakoff has announced in these despatches the intention of Russia to continue to observe certain of the provisions of the Treaty. However satisfactory this might be in itself, it is obviously an expression of the free will of that Power, which it might at any time alter or withdraw; and in this it is thus open to the same objections as the other portions of the communications, because it implies the right of Russia to annul the Treaty on the ground of allegations of which she constitutes herself the only judge.
The question therefore arises, not whether any desire expressed by Russia ought to be carefully examined in a friendly spirit by the co-signatory Powers, but whether they are to accept from her the announcement that, by her own act, without any consent from them, she has released herself from a solemn covenant.
I need scarcely say that Her Majesty's Government have received this communication with deep regret, because it opens a discussion which might unsettle the cordial understanding it has been their earnest endeavour to maintain with the Russian Empire; and for the above-mentioned reasons it is impossible for Her Majesty's Government to give any sanction, on their part, to the course announced by Prince Gortschakoff.
If, instead of such a declaration, the Russian Government had addressed Her Majesty's Government and the other Powers who are parties to the Treaty of 1856, and had proposed for consideration with them, whether anything has occurred which could be held to amount to an infraction of the Treaty, or whether there is anything in the terms which, from altered circumstances, presses with undue severity upon Russia, or which, in the course of events, had become unnecessary for the due protection of Turkey, Her Majesty's Government would not have refused to examine the question in concert with the co-signatories to the Treaty. Whatever might have been the result of such communications, a risk of future complications and a very dangerous precedent as to the validity of international obligations would have been avoided.
I am, &c.,
(Signed) Granville.
P.S.—You will read and give a copy of this despatch to Prince Gortschakoff.
Prince Gortschakoff to Baron Brunnow.