A world without American economic, political, military and scientific leadership would struggle to overcome many of its greatest challenges.
Anti-Americanism is a persistent problem but it has become uglier and less reasonable in recent years, endangering the possibilities of co-operation between the USA and its international allies.
No single politician or strategy can cure the cultural, economic and political sources of anti-Americanism but more needs to be done to restore America's global standing.
Many of the most popular strategies for tackling anti-Americanism involve America retreating from her strategic interests and ethical obligations. They also risk transferring too much power to multilateral institutions that are ill-equipped to assume global leadership.
Anti-Americanism is not just America's problem. America's international allies have been too slow to shoulder their responsibilities in combating prejudices against the USA.
International media - the world's second superpower - plays an important role in shaping attitudes to America. American public diplomacy and new, internet-based media can play an important role in ensuring that this role is discharged more fairly."