I encourage you to read Walter Russell Mead’s analysis of events at Foreign Policy in full. Here’s a snippet:
Since World War II, U.S. grand strategy has been shaped by two major schools of thought, both focused on achieving a stable international system with the United States at the center. Hamiltonians believed that it was in the American interest for the United States to replace the United Kingdom as “the gyroscope of world order,†in the words of President Woodrow Wilson’s adviser Edward House during World War I, putting the financial and security architecture in place for a reviving global economy after World War II—something that would both contain the Soviet Union and advance U.S. interests. When the Soviet Union fell, Hamiltonians responded by doubling down on the creation of a global liberal order, understood primarily in economic terms.
Wilsonians, meanwhile, also believed that the creation of a global liberal order was a vital U.S. interest, but they conceived of it in terms of values rather than economics. Seeing corrupt and authoritarian regimes abroad as a leading cause of conflict and violence, Wilsonians sought peace through the promotion of human rights, democratic governance, and the rule of law. In the later stages of the Cold War, one branch of this camp, liberal institutionalists, focused on the promotion of international institutions and ever-closer global integration, while another branch, neoconservatives, believed that a liberal agenda could best be advanced through Washington’s unilateral efforts (or in voluntary conjunction with like-minded partners).
If you want to know where my views fit into the scheme of things, Dr. Mead does a pretty fair job of describing them here:
Jeffersonians, including today’s so-called realists, argue that reducing the United States’ global profile would reduce the costs and risks of foreign policy. They seek to define U.S. interests narrowly and advance them in the safest and most economical ways.
What has happened? Jacksonian populist nationalism has prevailed:
The distinctively American populism Trump espouses is rooted in the thought and culture of the country’s first populist president, Andrew Jackson. For Jacksonians—who formed the core of Trump’s passionately supportive base—the United States is not a political entity created and defined by a set of intellectual propositions rooted in the Enlightenment and oriented toward the fulfillment of a universal mission. Rather, it is the nation-state of the American people, and its chief business lies at home. Jacksonians see American exceptionalism not as a function of the universal appeal of American ideas, or even as a function of a unique American vocation to transform the world, but rather as rooted in the country’s singular commitment to the equality and dignity of individual American citizens. The role of the U.S. government, Jacksonians believe, is to fulfill the country’s destiny by looking after the physical security and economic well-being of the American people in their national home—and to do that while interfering as little as possible with the individual freedom that makes the country unique.
[…]
Many Jacksonians came to believe that the American establishment was no longer reliably patriotic, with “patriotism†defined as an instinctive loyalty to the well-being and values of Jacksonian America. And they were not wholly wrong, by their lights. Many Americans with cosmopolitan sympathies see their main ethical imperative as working for the betterment of humanity in general. Jacksonians locate their moral community closer to home, in fellow citizens who share a common national bond. If the cosmopolitans see Jacksonians as backward and chauvinistic, Jacksonians return the favor by seeing the cosmopolitan elite as near treasonous—people who think it is morally questionable to put their own country, and its citizens, first.
Read the whole thing (registration required).
Contrary to Dr. Mead I don’t think that the challenge that faces international politics is to “stop the liberal order’s erosion and reground the global system on a more sustainable basis”. I think it’s to prove that the “liberal order” isn’t a fraud, just another way for a small number of people to promote their own interests at the expense of everybody else.