US Vice President JD Vance arrived in Switzerland on Sunday to participate in high-level peace negotiations with Iran, as both countries seek to turn a recently agreed ceasefire into a lasting settlement. The talks follow an interim agreement signed earlier this week and are expected to focus on reducing tensions, addressing nuclear concerns, and creating a framework for broader regional stability after nearly four months of conflict.
However, uncertainty surrounding the Strait of Hormuz has emerged as a major challenge ahead of the negotiations. Iran’s Islamic Revolutionary Guard Corps announced that the strategic waterway had been closed, while US military officials stated that commercial shipping continued without interruption. According to US Central Command, 55 merchant vessels carrying more than 17 million barrels of oil successfully passed through the strait on Saturday, underscoring its importance to global energy markets.
The situation has become more complex as both sides exchange accusations over compliance with the ceasefire agreement. Iranian officials argue that key commitments have not yet been fully implemented, warning that regional energy flows could remain disrupted if progress stalls. Meanwhile, US officials insist that maritime traffic remains secure and have pledged to maintain freedom of navigation during the ongoing diplomatic process.
The Iranian delegation is led by chief negotiator Mohammad Baqer Qalibaf and includes Foreign Minister Abbas Araqchi along with senior security, economic, and energy officials. The US team features JD Vance, special envoy Steve Witkoff, and senior adviser Jared Kushner. Pakistan is also playing a prominent role, with Prime Minister Shehbaz Sharif and Chief of Defence Forces Field Marshal Syed Asim Munir attending the discussions in support of continued diplomatic engagement.
At the same time, tensions in Lebanon continue to threaten the fragile diplomatic progress achieved so far. Despite a ceasefire arrangement, both Israel and Hezbollah have reported military actions and exchanged accusations of violations. Lebanese authorities reported casualties from Israeli strikes, while Israeli officials said their forces responded to attacks launched by Hezbollah positions near the border.
Nevertheless, negotiators remain hopeful that the Switzerland meetings can produce meaningful progress over the coming days. Vance expressed confidence that the ceasefire would hold and said he had seen no evidence that the Strait of Hormuz was fully closed. With senior officials from all sides gathered at the negotiating table, the talks are being viewed as a critical opportunity to strengthen peace efforts and prevent a wider regional crisis.