Sir Henry Drummond-Wolff negotiated an agreement with Sultan Abdülhamit II at the behest of British Foreign Secretary Lord Robert Salisbury; the pact was to terminate Britain's occupation of Egypt after a three-year period. Because the agreement would have empowered Britain to reenter Egypt under certain conditions, the French and Russian ambassadors in Istanbul persuaded the sultan to withdraw his approval. Consequently, the British occupation of Egypt was greatly prolonged.
See also AbdÜlhamit II.
Hornik, F. P. "Mission of Sir Henry Drummond-Wolff to Constantinople 1885–1887." English Historical Review 55 (1940): 598–623.
"Drummond–Wolff Convention." Encyclopedia of the Modern Middle East and North Africa. . Encyclopedia.com. (December 14, 2018). https://www.encyclopedia.com/humanities/encyclopedias-almanacs-transcripts-and-maps/drummond-wolff-convention
"Drummond–Wolff Convention." Encyclopedia of the Modern Middle East and North Africa. . Retrieved December 14, 2018 from Encyclopedia.com: https://www.encyclopedia.com/humanities/encyclopedias-almanacs-transcripts-and-maps/drummond-wolff-convention