Proper noun
Holy Alliance
(historical) A coalition of Russia, Austria and Prussia formed in 1815, ostensibly to regulate all national and international relations in accordance with the principles of Christian charity.
He aimed at a strong and united Spanish America able to cope not only with the threats emanating from Spain and the European Holy Alliance but also with the emerging power of the United States. Source: Internet
For five centuries, the Vatican has used a secret spy service, called the Holy Alliance, or later, the Entity, to carry out its will. Source: Internet
Prussia, Austria, Britain and France, (the other members of the "Holy Alliance") lacked the large armies required to do so. Source: Internet