Dual Alliance
noun
the alliance between France and Russia (1890), strengthened by a military convention (1892–93) and lasting until the Bolshevik Revolution in 1917.
the alliance between Germany and Austria-Hungary against Russia 1879–1918.
British Dictionary definitions for dual alliance
Dual Alliance
noun
the alliance between France and Russia (1893–1917)
the secret Austro-German alliance against Russia (1879) later expanded to the Triple Alliance