The Zapatistas also use the phrase; for them the Third World War was usually known as the Cold War, fought between the superpowers in which mainly poorer, neutral nations were casualties. The Fourth World War refers to economic neo-liberalism, that wishes to transfer power from states to the hands of multi-national corporations.
This usage of The Fourth World War was borrowed by filmmakers in 2004, for a documentary exploring a decade's worth of popular social movements that resisted neo-liberalism and imperialism.
Albert Einstein said: "I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones."