Declaration of Pillnitz
The Declaration of Pillnitz on August 27, 1791, was a statement issued at the Castle of Pillnitz in Saxony (south of Dresden) by the Habsburg Holy Roman Emperor Leopold II and Frederick William II of Prussia.
Calling on European powers to intervene if Louis XVI of France was threatened, this declaration was intended to serve as a warning to the French revolutionaries not to infringe further on the rights of Louis XVI and to allow his restoration to power. The statement helped begin the French Revolutionary Wars.