The Mediterranean Agreements (German Mittelmeerentente; French Entente de la Méditerranée) were a series of treaties signed in 1887 by the United Kingdom of Great Britain and Ireland with Italy on 12 February (through the mediation of Germany), with Austria-Hungary on 24 March and with Spain on 4 May.
In fact, one of the objectives was to halt the expansion of the Russian Empire in the Balkans and her wish to control the straits of the Bosphorus and Dardanelles.
Thus it united forces hostile to Russia in the Balkans and to France in North Africa.
In the secret protocol to the Reinsurance Treaty, Bismarck lent support to Russia's expansion efforts.
Thus the Mediterranean Agreement, while not a de jure contradiction of the Reinsurance Treaty was at least contrary to its spirit.