 Complete the following phrase:  This failure was followed up in January 1923 by a joint appeal of the Comintern and Profintern for the creation of an action committee against fascism, followed in March with the establishment of a formal Action Committee Against Fascism in Berlin, headed by Clara Zetkin. An international conference of this group was called to be held later that same month in Frankfurt, Germany with invitations extended to the parties of the Second International and the unions of the Amsterdam International, but only a few Social Democrats attended, the overwhelming majority of the gathering being Communists. Delegates from Germany, Soviet Russia, France, and Britain united to denounce the Versailles Peace Treaty and the related 