Some 200 years ago, Britain, France and Austria agreed a treaty designed to counter their common rivals, Russia and Prussia. It was signed in secret by the British foreign secretary Viscount Castlereagh and his opposite numbers, the French Duke of Talleyrand and the Austrian Prince of Metternich.

https://www.mojatu.com/2019/11/18/nigel-farage-will-fight-labour-seats-after-pact-with-boris-johnson-fails-so-whats-he-up-to/