U.S. Secretary of State Rex Tillerson speaks during a media conference at NATO headquarters in Brussels on Wednesday, Dec. 6, 2017. U.S. Secretary of State Rex Tillerson and his NATO counterparts held talks on Georgia and counter-terrorism efforts on Wednesday, the final day of their two-day meeting in Brussels.(AP Photo/Virginia Mayo)

BRUSSELS - It's a go-to catchphrase when U.S. Secretary of State Rex Tillerson is called on to explain his boss on the world stage: "America first is not America alone." Yet as President Donald Trump declared Jerusalem the capital of Israel, Tillerson on Wednesday stood all by himself.

The onslaught came from all sides as Tillerson, at NATO headquarters in Brussels, got an earful from many a U.S. ally on Trump's Jerusalem move. So far, not a single country — other than Israel, of course — has thrown its support behind the declaration. Even Tillerson's own State Department has conceded the announcement could sow unrest throughout the Middle East.

Turkey's top diplomat, Mevlut Cavusoglu, was unsparing in criticism that was far harsher than any the U.S. is accustomed to from a NATO ally.

"The whole world is against this," Cavusoglu told reporters as he awaited Tillerson's arrival for their meeting. He said he'd already told Trump's chief diplomat that it was a "grave mistake." Cavusoglu said he planned to "tell him again."

That time-tested "special relationship" with Britain? Not so special as to prevent Foreign Secretary Boris Johnson from putting Tillerson on the spot. After the two shook hands, Johnson used the occasion to suggest it was time for Trump's Mideast peace team to put up or shut up.

"Clearly this is a decision that makes it more important than ever that the long-awaited American proposals on the Middle East peace process are now brought forward, and I would say that that should happen as a matter of priority," Johnson said as Tillerson stood uneasily a few feet away.

Trump, in a speech Wednesday, recognized Jerusalem as the capital of the Jewish state and said he'd start the process of moving the U.S. Embassy there from Tel Aviv. The Palestinians and essentially every country see that as undermining future Israeli-Palestinian peace talks that would include Jerusalem's fate — just as the Trump administration purports to be working to broker the ever-elusive deal.

Asked about Trump's decision, Tillerson insisted the president "still is very committed to the peace process" — an assertion that U.S. allies said Trump had disproven by going ahead with the move despite near-universal protestations. And while the decision directly affects his department, Tillerson acknowledged his role was relatively minimal, focused on ensuring the State Department and Pentagon had enough time to boost precautions to keep U.S. personnel overseas safe amid the inevitable backlash.

"While we know others out there may not welcome this decision, they certainly should express their views," Tillerson said. "We hope they'll do that in a nonviolent way."

Tillerson has tried throughout his tenure to soften the president's isolationist-tinged foreign policy by explaining that the U.S. still seeks to lead and build strong partnerships with likeminded nations. He also has echoed Trump in describing how the U.S. feels burden-sharing has gotten out of balance in recent years.

There are few signs America's foreign partners are buying it. At EU and NATO meetings this week, Tillerson got earful after earful about Trump's hampering of the Iran nuclear deal, withdrawal from the Paris climate accord and stated disdain for the United Nations, to name just a few examples.

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Reach Josh Lederman on Twitter at http://twitter.com/joshledermanAP

News from © The Associated Press, 2017