In the 20th century, three world wars facilitated a Communist revolution, a Fascist backlash and the subsequent collapse of both. The weakness of bureaucratic information flows (relative to market-based competitors) undermined Communist economies – a point emphasized by Frederick Hayek, the co-leader (with Murray Rothbard) of the fourth generation Austrian School of Economics. Flows of information and disinformation played pivotal roles in the First, Second and Third (that is, Cold) World Wars.