Source
Secret Reinsurance Treaty between Germany and Russia from June 18, 1887
The imperial courts of Germany and of Russia, animated by an equal desire to strengthen the general peace by an understanding destined to assure the defensive position of their respective states, have resolved to confirm the agreement established between them by a special arrangement, in view of the expiration on June 15–27, 1887,[1] of the validity of the secret treaty […] signed in 1881 and renewed in 1884 by the three courts of Germany, Russia, and Austria-Hungary.
To this end the two Courts have named as plenipotentiaries: […][2]
Article I
In case one of the high contracting parties
should find itself at war with a third Great Power, the other
would maintain a benevolent neutrality towards it, and would
devote its efforts to the localization of the conflict. This
provision would not apply to a war against Austria or France in
case this war should result from an attack directed against one of
these two latter Powers by one of the high contracting
parties.
Article II
Germany recognizes the rights historically
acquired by Russia in the Balkan Peninsula, and particularly the
legitimacy of her preponderant and decisive influence in Bulgaria
and in eastern Rumelia.[3] The two courts engage to admit no modification of the
territorial status quo of the
said peninsula without a previous agreement between them, and to
oppose, as occasion arises, every attempt to disturb this
status quo or to modify it
without their consent.
Article III
The two courts recognize the European and
mutually obligatory character of the principle of the closing of
the Straits of the Bosphorus and of the Dardanelles, founded on
international law, confirmed by treaties, and summed up in the
declaration of the second plenipotentiary of Russia at the session
of July 12 of the Congress of Berlin (Protocol 19).
They will take care in common that Turkey shall make no exception to this rule in favor of the interests of any government whatsoever, by lending to warlike operations of a belligerent power the portion of its empire constituted by the straits. In case of infringement, or to prevent it if such infringement should be in prospect, the two courts will inform Turkey that they would regard her, in that event, as putting herself in a state of war towards the injured party, and as depriving herself thenceforth of the benefits of the security assured to her territorial status quo by the Treaty of Berlin.
Article IV
The present treaty shall remain in force for
the space of three years, dating from the day of the exchange of
ratifications.[4]
Article V
The high contracting parties mutually promise
secrecy as to the contents and the existence of the present
treaty.
Article VI
The present Treaty shall be ratified and
ratifications shall be exchanged at Berlin within a period of a
fortnight, or sooner if may be. […]
Secret Protocol
In order to complete the stipulations of Articles 2 and 3 of the secret Treaty concluded on this same date, the two Courts have come to an agreement upon the following points:
1. Germany, as in the past, will lend her assistance to Russia in order to re-establish a regular and legal government in Bulgaria. She promises in no case to give her consent to the restoration of the Prince of Battenberg.
2. In case His Majesty the Emperor of Russia should find himself under the necessity of assuming the task of defending the entrance of the Black Sea in order to safeguard the interests of Russia, Germany engages to accord her benevolent neutrality and her moral and diplomatic support to the measures which His Majesty may deem it necessary to take to guard the key of His Empire.
3. The present Protocol forms an integral part of the secret Treaty signed on this day at Berlin, and shall have the same force and validity.
Notes
Source of English translation: The Secret Treaties of Austria-Hungary, 1879–1914, vol. 1, Text of the Treaties and Agreements, edited by Alfred Franzis Pribram and Archibald Cary Coolidge, translated by Denys P. Myers and J. G. D’Arcy Paul. Cambridge, MA: Harvard University Press, 1920, pp. 274–81. Available online at: https://babel.hathitrust.org/cgi/pt?id=uc1.b3648608&view=1up&seq=1. Reprinted in Theodore S. Hamerow, ed., The Age of Bismarck: Documents and Interpretations. New York: Harper & Row, 1973, pp. 287–89.
Source of original German text: Bernhard Schwertfeger, Die Diplomatische Akten des Auswärtigen Amtes 1871–1914. Ein Wegweiser durch das große Aktenwerk der deutschen Regierung, vol. 1, Die Bismarck-Epoche 1871–1890. Berlin: Deutsche Verlagsgesellschaft für Politik und Geschichte, 1923, pp. 315ff.; reprinted in Ernst Rudolf Huber, ed., Dokumente zur Deutschen Verfassungsgeschichte, 3rd rev. ed., vol. 2, 1851–1900. Stuttgart: W. Kohlhammer, 1986, pp. 498–500.