The U.S.-Iran agreement enters its implementation phase

As negotiators establish a roadmap toward a final deal, attention is shifting to the inspectors, technical experts and verification systems that could determine whether it succeeds.

A bilateral meeting between Swiss Foreign Minister Ignazio Cassis, left, and U.S. Vice President JD Vance, on June 21, 2026, at the Bürgenstock resort in Switzerland. (©Jade Guerne/FDFA)

The first round of U.S.-Iran implementation talks concluded with agreement on a roadmap toward a final settlement within 60 days, while technical teams remained in Switz…