The United States and Iran resumed talks in Switzerland on Sunday as both sides worked to build on last week’s interim peace agreement. U.S. Vice President JD Vance led the American delegation, while Iranian Parliament Speaker Mohammad Bagher Ghalibaf represented Tehran. Officials from Pakistan and Qatar also joined the discussions as mediators.

The talks come just days after new tensions emerged over the Strait of Hormuz. Iran warned ships to stay away from the key oil shipping route and suggested it would remain restricted until certain conditions were met. The U.S. rejected those claims, saying the waterway remains open and that commercial traffic continues to move through the area.

Iran linked its position to ongoing Israeli military operations in Lebanon and accused Washington of failing to fully uphold parts of the ceasefire framework. Meanwhile, the U.S. said it is closely monitoring the situation and remains focused on keeping the route open. President Donald Trump also indicated that the administration considers the strait open for shipping traffic.

Despite the disagreement, both sides signaled that they want negotiations to continue. The discussions are expected to focus on Iran’s nuclear program, regional security, and the future of the ceasefire. Vance said progress is being made, while International Atomic Energy Agency chief Rafael Grossi urged all parties to give diplomacy every chance to succeed before the 60-day deadline expires.

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