Yerevan sources reported that the visit of representatives of an American company to study the territory in Armenia within the framework of the Trump Route for International Peace and Prosperity (TRIPP) project has been postponed due to the war with Iran, Foreign Policy reports.

US President Donald Trump's Iran policy might undermine his one successful peace accord—reached between Armenia and Azerbaijan.

Last year, Trump pulled off a remarkable feat: With an unexpected White House summit and some creative diplomacy, he managed to jump-start the peace process between longtime foes Azerbaijan and Armenia and spur more diplomatic progress than the region has seen in decades. Amid Trump’s wildly overhyped global peacemaking efforts, this was a real win.

Now, though, the fallout from Trump’s war in Iran is threatening to undo his achievement in the Caucasus. Officials in both Armenia and Azerbaijan are expressing concern that Trump’s tiny circle of trusted foreign-policy figures has shifted attention away from the region. Even with a cease-fire declared, the White House is going to be fixated on Iran for some time. As a result, the momentum toward peace in the Caucasus could be lost.

Earlier, Trump proposed a solution under TRIPP, according to which Armenian officials would retain legal control over the border, but inspections would be carried out by employees of a private company representing a third country. And the route would be serviced by an Armenian-American joint venture.

Following the White House summit, the two sides began to rapidly take steps to improve relations. Azerbaijani think tank experts began visiting Armenia and vice versa. Azerbaijan began for the first time to sell fuel to Armenia and allow grain from Russia and Kazakhstan to transit its territory en route to Armenia.

In early February, Vice President JD Vance visited Armenia and Azerbaijan in a show of the U.S. resolve to see TRIPP through.

The first stage of TRIPP will run directly along Armenia’s far southern border, within shouting distance of the Iranian border. Companies that the United States was hoping to attract to build and operate the route are no doubt reassessing the security risks of their potential investments.

In addition, officials both in Yerevan and Baku have told me and my colleagues at Crisis Group that they are worried the war will take critical US attention away from TRIPP.

The United States and Armenia still need to work out a contract setting up the company to operate the route, for which there isn’t really a precedent and which involves addressing many sensitive political and financial issues. Handling that process is the same tiny team, led by Trump advisor Steve Witkoff, which now has its hands more than full with Iran.

More broadly, the war could reorder U.S. priorities in the Caucasus in ways that will make peace harder to reach. As it stands now, TRIPP would actually benefit Iran, as it would restore the Soviet-era rail links that connected to Iran via a junction in Nakhchivan. It would also particularly benefit Armenia, a critical trade and security partner to Iran. Will Washington continue to be interested in a project that is going to help Iran?

The involvement of Trump and the United States has underpinned remarkable progress in the last few months. Losing that would be a real test for the peace process, added Foreign Policy.