11 Parties that wish to belong to the Communist International have the obligation to subject the personal composition of their parliamentary factions to review, to remove all unreliable elements from them and to subordinate these factions to the party leadership, not only in words but also in deeds, by calling on every individual communist member of parliament to subordinate the whole of his activity to the interests of really revolutionary propaganda and agitation. 12 The parties belonging to the Communist International must be built on the basis of the principle of democratic centralism. In the present epoch of acute civil war the communist party will only be able to fulfil its duty if it is organised in as centralist a manner as possible, if iron discipline reigns within it and if the party centre, sustained by the confidence of the party membership, is endowed with the fullest rights and authority and the most far-reaching powers.