It was these views of Martov that predominated in a manifesto drawn up by Leon Trotsky (at the time a Menshevik) at a conference in Zimmerwald, attended by 35 Socialist leaders in September 1915. Inevitably Vladimir Lenin, supported by Zinoviev and Radek, strongly contested them. Their attitudes became known as the Zimmerwald Left. Lenin rejected both the defence of Russia and the cry for peace. Since the autumn of 1914, he had insisted that "from the standpoint of the working class and of the labouring masses the lesser evil would be the defeat of the Tsarist Monarchy"; the war must be turned into a civil war of the proletarian soldiers against their own governments, and if a proletarian victory should emerge from this in Russia, then their duty would be to wage a revolutionary war for the liberation of the masses throughout Europe.