U.S. and Iranian delegations arrived at the Bürgenstock in Switzerland on Sunday for high-level talks amid conflicting claims over the Strait of Hormuz, just days after signing an interim agreement to end the war and lift crippling economic sanctions.
Negotiations Open in Switzerland as Tensions Flare Over Shipping Routes
U.S. Vice President JD Vance arrived in Switzerland on Sunday to begin a critical 60-day diplomatic process aimed at converting a fragile interim accord into a permanent peace deal. The talks bring together the U.S. delegation, an Iranian delegation led by Speaker of the Iranian Parliament Mohammad Bagher Ghalibaf, and mediators from Pakistan and Qatar at the Bürgenstock. Switzerland’s Federal Department of Foreign Affairs confirmed that discussions were set to begin during the morning hours.
The diplomatic push follows a memorandum of understanding signed Wednesday by President Donald Trump and Iranian President Masoud Pezeshkian at the Palace of Versailles during a G7 summit. Prime Minister Shehbaz Sharif of Pakistan, which mediated the agreement, announced that the deal entered into force with immediate effect.
Disputed Control and Conflicting Claims Over the Strait of Hormuz
Even as diplomats gathered in Switzerland, Tehran and Washington traded conflicting assertions regarding the critical shipping lanes of the Persian Gulf. Iran warned vessels to stay away from the waterway over the weekend, with state media and military command asserting that the strait would remain closed until a ceasefire in Lebanon was respected and waivers on Iranian oil sales were issued.
U.S. officials rejected those claims entirely. U.S. Central Command spokesperson Navy Captain Tim Hawkins stated that traffic continued to flow while U.S. forces monitored the area.
Iran does not control the Strait of Hormuz. Traffic continues to flow, and U.S. forces are monitoring the situation to ensure this remains the case. Navy Captain Tim Hawkins, U.S. Central Command spokesperson, via Reuters
President Trump added a financial warning regarding the waterway, indicating via social media that the administration considers the strait open but would institute transit tolls for services rendered should the 60-day negotiations fail to produce a final treaty.
Economic Relief, Sanctions Waivers, and Nuclear Oversight
The signed memorandum of understanding outlines substantial economic provisions intended to draw a line under the conflict launched on February 28. Under the text, Washington commits to immediately waive oil sanctions crippling Iran’s economy and facilitate the immediate reopening of the Strait of Hormuz while the U.S. lifts its naval blockade.
Furthermore, once a final agreement is secured on Iran’s nuclear program, the United States will facilitate the release of a $300 billion reconstruction fund supported by regional nations. In return, Tehran agreed to dilute its enriched uranium stocks. IAEA Director General Rafael Grossi met with Swiss Foreign Minister Ignazio Cassis at the talks to review developments regarding Iran’s path ahead.
The Lebanese Front and De-Confliction Hurdles
A primary stumbling block in the Swiss negotiations remains the ongoing violence in Lebanon. Iranian state media reported that Tehran’s delegation briefly walked out of discussions following a difficult phase in talks and renewed threats from Washington. Despite the friction, mediators reported progress, with Iran’s foreign minister claiming that a major reconstruction and development plan for Iran had been launched.
To address the front line, the U.S. and Iran agreed to establish a de-confliction cell including the Lebanese government to ensure the adherence of the termination of military operations. This mechanism is designed to manage the Strait of Hormuz and prevent miscommunication. Meanwhile, Israeli military operations in southern Lebanon continued over the weekend, resulting in strikes and casualties in Nabatiyeh.
The 60-Day Timeline and Technical Negotiations Ahead
Negotiators now face a strict two-month window to hammer out the technical details of a permanent treaty. While high-level talks concluded their initial round, lower-level talks are scheduled to continue for the remainder of the week in Switzerland with Qatari and Pakistani delegations serving as mediators.
