WASHINGTON (AP) — America first? Try America first, second and third.

As US President Donald Trump prepares for his second UN General Assembly, the Olympics of international diplomacy, his administration has turned unabashedly and profoundly inward, pursuing ever more unilateral policies in what critics argue is a great retreat from global engagement that had been a bipartisan hallmark of previous US leaders.

Trump aides who used to qualify his well-worn campaign slogan by insisting that “America first does not mean America alone” are gone. In their place are advocates of inviolable state sovereignty who share a belief that many of the institutions established after World War II to secure and maintain international order are either obsolete or in need of serious revision.

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Ahead of the General Assembly, some expect the meeting to have a different tone from last year when wary world leaders weren’t prepared for Trump’s brand or style of diplomacy or for his determination to push an “America first” agenda. This time around they know what to expect.

“A lot of leaders have gamed out how to deal with the president,” said Jon Alterman, senior vice president of the Center for Strategic and International Studies. “They will be nice to him in person, but will work to create broad coalitions to block or undermine a lot of the president’s initiatives because they think they are misguided. They’ll try to use this meeting to advance strategies that promote their vision and not the president’s, but not rub the president’s face in it.”

Stewart Patrick, a former State Department official in President George W. Bush’s administration who is now a senior fellow at the Council on Foreign Relations, said Trump is “abdicating global leadership and retreating into narrow-minded nationalism” and that his approach “provides few incentives for other countries to align themselves with American purposes.”

“The administration’s unilateralism is wearing thin, as (UN) member states tire of America’s browbeating and unwillingness to compromise,” he wrote on Wednesday. “Next week, the president will encounter a more skeptical global audience, woke to the reality that his administration’s diplomacy is all take and no give.”

Getting the Trump administration to change course, however, may be difficult, considering its foreign policy trajectory.

When former Secretary of State John Kerry left the State Department for the last time on January 19, 2017, he told diplomats that the United States was “more engaged in more places in this world with greater positive impact than at any time in American history.”

His assertion was arguable at the time. But if it was true then, it is no longer.

The seeds of the retreat were planted even before Trump fired his first secretary of state, Rex Tillerson, in March, and the departures the next month of his chief economic adviser, Gary Cohn, and national security adviser, H.R. McMaster.

In his first several months, Trump withdrew from a trans-Pacific trade deal, the Paris climate accord and pulled the US out of the UN’s science, educational and cultural organization. He repeatedly questioned the relevance of NATO, the utility of other multilateral groups and organizations, insulted the leaders of US allies and pared back the Obama administration’s rapprochement with Cuba. In December, against the advice of his national security team, he recognized Jerusalem as Israel’s capital.

But since Tillerson, Cohn and McMaster left and were replaced with Mike Pompeo, Larry Kudlow and John Bolton, the pace of the retreat has intensified and heading into the General Assembly appears set to increase.

In the last six months alone, Trump has pulled the US out of the UN Human Rights Council, yanked funding for the UN agency for Palestinian refugees, halted virtually all assistance to the Palestinians themselves and re-ignited the Jerusalem dispute by moving the US embassy there from Tel Aviv.

In the same time frame, the administration has also imposed sanctions on NATO ally Turkey, slashed its contributions to Syria stabilization efforts, withdrawn from the Iran nuclear deal, sharply reduced refugee admissions, threatened to prosecute International Criminal Court employees if the tribunal even opens an investigation into alleged war crimes by US troops, started a trade war with China and suggested the US might quit the World Trade Organization.

Two areas where the administration has tried outreach — with North Korea and Russia — have been criticized or viewed with extreme skepticism by many foreign policy veterans, Republicans and Democrats alike.

Trump has met the leaders of both nations at summits that produced questionable results.

And, while he has claimed progress on the North Korea front that may yet pan out, the engagement has yet to achieve any concrete sign of success on the desired result of denuclearization.