# Germany and Russia sign the Reinsurance Treaty

Date: 1887

## The fact

On 18 June 1887 Germany and Russia signed the secret Reinsurance Treaty: neutrality if the other were at war with a third power, with exceptions for wars against Austria or France depending on who attacked. [Bismarck](/people/otto-von-bismarck) used it to replace the dead Three Emperors’ League. The Reichstag did not ratify a secret instrument. This is not the Dual Alliance. Later museums, competitions, UNESCO lists, and translations are not this Fact. The Reichstag, Wilhelm I, Moltke, Roon, and state administrations may share the file; they do not erase a documented decision, and they are not a licence to treat every regiment’s act as his handwriting.

## Context

Bulgarian crises had wrecked the 1881 three-emperor treaty. France was still the named enemy. Secrecy vis-à-vis Vienna was part of the design. Caprivi’s 1890 refusal to renew is another person’s act. Polarization here is interstate. Later museums, competitions, UNESCO lists, and translations are not this Fact. The Reichstag, Wilhelm I, Moltke, Roon, and state administrations may share the file; they do not erase a documented decision, and they are not a licence to treat every regiment’s act as his handwriting.

## Evidence and sources

Avalon publishes the Reinsurance Treaty. Britannica independently dates it. German and Russian documentary editions independently confirm secrecy. Later museums, competitions, UNESCO lists, and translations are not this Fact. The Reichstag, Wilhelm I, Moltke, Roon, and state administrations may share the file; they do not erase a documented decision, and they are not a licence to treat every regiment’s act as his handwriting.

Official or archival record: Avalon — Reinsurance Treaty, 18 June 1887 (https://avalon.law.yale.edu/19th_century/reinsure.asp; Yale Avalon Project).

## Significance

Improving polarization path (weakening a two-front immediate lock). Complex. Medium confidence because secrecy itself is a democratic cost stored only as context. Later museums, competitions, UNESCO lists, and translations are not this Fact. The Reichstag, Wilhelm I, Moltke, Roon, and state administrations may share the file; they do not erase a documented decision, and they are not a licence to treat every regiment’s act as his handwriting.

If a number is not in the two records named above, it is not supplied here.

## What is established and what is not

Established: a secret Reinsurance Treaty was signed on 18 June 1887 under Bismarck. Not established: that Wilhelm II was bound to renew it, or that 1914 was thereby blocked. Later museums, competitions, UNESCO lists, and translations are not this Fact. The Reichstag, Wilhelm I, Moltke, Roon, and state administrations may share the file; they do not erase a documented decision, and they are not a licence to treat every regiment’s act as his handwriting.

Confidence is stated on the impact path, not hidden in adjectives. Do not twin Reinsurance with Dual Alliance or Three Emperors. Caprivi’s non-renewal is not this Fact. Mixed effects of Germany and Russia sign the Reinsurance Treaty are separate paths.

Later competitions, monuments, translations, UNESCO listings, museums, and adaptations are not converted into extra lifetime acts.

The attached driver is [political-polarization](/drivers/political-polarization). The welfare reading used in this dossier is improving. That reading is an impact-path choice, not a property stored on the Fact itself.

Shared responsibility is part of Germany and Russia sign the Reinsurance Treaty. Naming Otto von Bismarck does not delete co-authors, institutions, or later transmitters. The lag from 1887-06-18 to any measured indicator is not treated as zero. Alternative explanations — weather, other armies, later statutes, or independent cultural change — remain live where the sources do not close them.

## People

- Otto von Bismarck: https://factrail.ai/people/otto-von-bismarck

## Drivers

- Political Polarization: https://factrail.ai/drivers/political-polarization

## Sources

- https://www.britannica.com/event/Reinsurance-Treaty
- https://avalon.law.yale.edu/19th_century/reinsure.asp

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/de-bismarck-reinsurance-treaty-1887