The means by which they hoped to attain this end were a loyal application of the Charter granted by Louis XVIII and the steady co-operation of the king with themselves to defeat the Ultra-royalists, a group of counterrevolutionaries who aimed at the complete undoing of the political and social work of the French Revolution. The Doctrinaires were ready to allow the king a large discretion in the choice of his ministers and the direction of national policy. They refused the principle of parliamentary responsibility, that is to allow that ministers should be removed in obedience to a hostile vote in the chamber.