Convention of Constantinople
| Type | Multilateral trade treaty |
|---|---|
| Signed | 29 October 1888 |
| Location | Constantinople |
| Effective | ratifications deposited 22 December 1888; effective 8 April 1904 |
| Expiration | N/A |
| Signatories | United Kingdom, Germany, Austro-Hungary, the Netherlands, Spain, France, Russian Empire, and the Ottoman Empire |
| Depositary | Ottoman Empire |
| Language | French |
The Convention of Constantinople was a treaty signed by the United Kingdom, Germany, Austro-Hungary, Spain, France, Italy, the Netherlands, Russian Empire and the Ottoman Empire on 29 October 1888.
In the 1880s, Britain had recently acquired physical control over the Suez Canal and Egypt. France, which had dominated the Canal and still controlled the majority of shares of Suez Canal Company, hoped to weaken British control and attempted to sway European opinion for internationalizing the Canal.
The two powers compromised by neutralizing the canal through the treaty. Article I, guaranteeing passage to all ships during war and peace, was in tension with Article X, which allowed the Khedive to take measures for "the defence of Egypt and the maintenance of public order." The latter clause was used to defend their actions by the British in the Second World War and by Egypt against Israeli shipping after 1948. However, Britain accepted the treaty reluctantly and only with serious reservations:
The delegates of Great Britain, in offering this text as the definitive rule to secure the free use of the Suez Canal, believe it is their duty to announce a general reservation as to the applicability of its provisions in so far as they are incompatible with the transitory and exceptional state in which Egypt is actually found and so far as they might fetter the liberty of action of the government during the occupation of Egypt by the British forces.
France accepted the reservation but, in accordance with international law at the time, noted that this made the treaty a "technically inoperative" "academic declaration." The reservation was not removed until the Entente Cordiale between Britain and France, and the convention finally came into force in 1904. The Entente stipulated that the functioning of the international supervisory commission described in article 8 would "remain in abeyance." However, for the next forty years, British actions would be largely in the spirit of the abandoned reservation.
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