forecast, Friedman led increasingly successful criticisms against the Keynesian consensus, convincing not only academics and politicians but also much of the general public with his radio and television broadcasts. The academic credibility of Keynesian economics was further undermined by additional criticism from other monetarists trained in the Chicago school of economics, by the Lucas critique and by criticisms from Hayek's Austrian School. So successful were these criticisms that by 1980 Robert Lucas claimed economists would often take offence if described as Keynesians. Keynesian principles fared increasingly poorly on the practical side of economicsby 1979 they had been displaced by monetarism as the primary influence on Anglo-American economic policy. However, many officials on both sides of the Atlantic retained a preference for Keynes, and in 1984 the Federal Reserve officially discarded monetarism, after which Keynesian principles made a partial comeback as an influence on policy making. Not all academics accepted the criticism against KeynesMinsky has argued that Keynesian economics had been debased by excessive mixing with neoclassical ideas from the 1950s, and that it was unfortunate that this branch of economics had even continued to be called "Keynesian". Writing in The American Prospect, Robert Kuttner argued it was not so much excessive Keynesian activism that caused the economic problems of the 1970s but the breakdown of the Bretton Woods system of capital controls, which allowed capital flight from regulated economies into unregulated economies in a fashion similar to Gresham's law phenomenon (where weak currencies undermine strong currencies). Historian Peter Pugh has stated that a key cause of the economic problems afflicting America in the 1970s was the refusal to raise taxes to finance the Vietnam War, which was against Keynesian advice. A more typical response was to accept some elements of the criticisms while refining Keynesian economic theories to defend them against arguments that would invalidate the whole Keynesian frameworkthe resulting body of work largely composing New Keynesian economics. In 1992 Alan Blinder wrote about a "Keynesian Restoration", as work based on Keynes's ideas had to some extent become fashionable once again in academia, though in the mainstream it was highly synthesised with monetarism and other neoclassical thinking. In the world of policy making, free market influences broadly sympathetic to monetarism have remained very strong at government levelin powerful normative institutions like the World Bank, the IMF and US Treasury, and in prominent opinion-forming media such as the Financial Times and