Troppau Protocol
The main pronouncement of the "Troppau Protocol" is as follows:
"States, which have undergone a change of government due to revolution, the result of which threaten other states, ipso facto cease to be members of the European Alliance, and remain excluded from it until their situation gives guarantees for legal order and stability. If, owing to such alterations, immediate danger threatens other states the powers bind themselves, by peaceful means, or if need be, by arms, to bring back the guilty state into the bosom of the Great Alliance."
No effort was made by the powers to give immediate effect to the principles enunciated in the protocol; and after it was officially announced the conferences were adjourned. It was decided to resume them at the Congress of Laibach the following January.
Read more about this topic: Congress Of Troppau