In The National Interest, John Mearsheimer writes:

In the first years after the Cold War ended, many Americans had a profound sense of optimism about the future of international politics. President Bill Clinton captured that mood when he told the UN General Assembly in September 1993:

It is clear that we live at a turning point in human history. Immense and promising changes seem to wash over us every day. The Cold War is over. The world is no longer divided into two armed and angry camps. Dozens of new democracies have been born. It is a moment of miracles.

The basis of all this good feeling was laid out at the time in two famous articles by prominent neoconservatives. In 1989, Francis Fukuyama argued in “The End of History?” that Western liberal democracy had won a decisive victory over communism and fascism and should be seen as the “final form of human government.”1 One consequence of this “ideological evolution,” he argued, was that large-scale conflict between the great powers was “passing from the scene,” although “the vast bulk of the Third World remains very much mired in history, and will be a terrain of conflict for many years to come.” Nevertheless, liberal democracy and peace would eventually come to the Third World as well, because the sands of time were pushing inexorably in that direction.

One year later, Charles Krauthammer emphasized in “The Unipolar Moment” that the United States had emerged from the Cold War as by far the most powerful country on the planet.2 He urged American leaders not to be reticent about using that power “to lead a unipolar world, unashamedly laying down the rules of world order and being prepared to enforce them.” Krauthammer’s advice fit neatly with Fukuyama’s vision of the future: the United States should take the lead in bringing democracy to less developed countries the world over. After all, that shouldn’t be an especially difficult task given that America had awesome power and the cunning of history on its side.

U.S. grand strategy has followed this basic prescription for the past twenty years, mainly because most policy makers inside the Beltway have agreed with the thrust of Fukuyama’s and Krauthammer’s early analyses.

The results, however, have been disastrous. The United States has been at war for a startling two out of every three years since 1989, and there is no end in sight. As anyone with a rudimentary knowledge of world events knows, countries that continuously fight wars invariably build powerful national-security bureaucracies that undermine civil liberties and make it difficult to hold leaders accountable for their behavior; and they invariably end up adopting ruthless policies normally associated with brutal dictators. The Founding Fathers understood this problem, as is clear from James Madison’s observation that “no nation can preserve its freedom in the midst of continual warfare.” Washington’s pursuit of policies like assassination, rendition and torture over the past decade, not to mention the weakening of the rule of law at home, shows that their fears were justified.

To make matters worse, the United States is now engaged in protracted wars in Afghanistan and Iraq that have so far cost well over a trillion dollars and resulted in around forty-seven thousand American casualties. The pain and suffering inflicted on Iraq has been enormous. Since the war began in March 2003, more than one hundred thousand Iraqi civilians have been killed, roughly 2 million Iraqis have left the country and 1.7 million more have been internally displaced. Moreover, the American military is not going to win either one of these conflicts, despite all the phony talk about how the “surge” has worked in Iraq and how a similar strategy can produce another miracle in Afghanistan. We may well be stuck in both quagmires for years to come, in fruitless pursuit of victory.

The United States has also been unable to solve three other major foreign-policy problems. Washington has worked overtime—with no success—to shut down Iran’s uranium-enrichment capability for fear that it might lead to Tehran acquiring nuclear weapons. And the United States, unable to prevent North Korea from acquiring nuclear weapons in the first place, now seems incapable of compelling Pyongyang to give them up. Finally, every post–Cold War administration has tried and failed to settle the Israeli-Palestinian conflict; all indicators are that this problem will deteriorate further as the West Bank and Gaza are incorporated into a Greater Israel.

The unpleasant truth is that the United States is in a world of trouble today on the foreign-policy front, and this state of affairs is only likely to get worse in the next few years, as Afghanistan and Iraq unravel and the blame game escalates to poisonous levels. Thus, it is hardly surprising that a recent Chicago Council on Global Affairs survey found that “looking forward 50 years, only 33 percent of Americans think the United States will continue to be the world’s leading power.” Clearly, the heady days of the early 1990s have given way to a pronounced pessimism.

This regrettable situation raises the obvious questions of what went wrong? And can America right its course? [Continue reading.]