Anybody who works in Washington knows that think tanks play an important role in advising the government on policy. One organization in particular has dramatically increased its influence over the past decade. The policy shop in question is McKinsey, a global and highly profitable " consulting firm. In the foreign policy community, think tanks are widely viewed as the traditional brokers in the marketplace of ideas. But this is changing. Whether based in investment banks like Goldman Sachs, management consultancies like McKinsey or political risk firms like the Eurasia Group, private-sector institutions have started to act like policy knowledge brokers. Consultants have been key advisers to the government for decades, but recent trends have caused their star to rise at the same time that traditional think tanks face new challenges. The University of Pennsylvania's annual think tank report has stressed "the fierce competition think tanks are facing from consulting firms" in recent years. And think tank officials have acknowledged the sway of donors. Bill Goodfellow, the executive director of the Center for International Policy, told the Times: "It's absurd to suggest that donors don't have influence. The danger is we in the think tank world are being corrupted in the same way as the political world." The irony is that the nonprofit actors, in trying to expand their base of support, have been accused of compromising their independence, while the explicitly for-profit world of consultants has avoided the charge.