"Our national security strategy is founded upon two pillars: "The first pillar is promoting freedom, justice, and human dignity - working to end tyranny, to promote effective democracies, and to extend prosperity through free and fair trade and wise development policies. Free governments are accountable to their people, govern their territory effectively, and pursue economic and political policies that benefit their citizens. Free governments do not oppress their people or attack other free nations. Peace and international stability are most reliably built on a foundation of freedom. "The second pillar of our strategy is confronting the challenges of our time by leading a growing community of democracies. Many of the problems we face - from the threat of pandemic disease, to proliferation of weapons of mass destruction, to terrorism, to human trafficking, to natural disasters - reach across borders. Effective multinational efforts are essential to solve these problems. Yet history has shown that only when we do our part will others do theirs. America must continue to lead. (President George W. Bush, Introduction, The National Security Strategy of the United States of America, White House: March 2006).