Preparations for technical negotiations between the United States and Iran have hit a roadblock after a planned meeting in Switzerland was called off, raising fresh questions about the implementation of the recently signed agreement aimed at ending months of conflict between the two countries.
The development comes as both sides continue to navigate a fragile ceasefire and prepare for complex negotiations on Iran’s nuclear program, sanctions relief, and regional security issues.
Talks that had been scheduled for Friday at the Burgenstock mountaintop resort in Switzerland will no longer take place, according to a statement issued by Switzerland’s foreign ministry.
The announcement followed confirmation from the White House that US Vice President JD Vance had withdrawn from a planned trip to Switzerland, where he was expected to meet Iranian negotiators and launch technical discussions on implementing the 14-point agreement reached between Washington and Tehran.
Also Read: Vance asks Israel to respect peace process with Iran
According to the White House, the US delegation had been prepared to depart as soon as arrangements were finalized, but negotiations over logistics remained unresolved.
"Vice President Vance will not leave for Switzerland tonight," a White House spokesperson said, adding that while Washington wants technical talks to begin as soon as possible, planning for the next phase of discussions remains incomplete.
Uncertainty over formal signing ceremony
The delay comes amid mixed signals regarding a proposed formal signing ceremony for the US-Iran agreement.
US officials had indicated earlier this week that a ceremonial signing would take place in Geneva. However, Iran’s Foreign Ministry questioned the need for such an event, arguing that both countries' presidents had already signed the agreement on Wednesday.
The disagreement over a public ceremony has added another layer of uncertainty to an already delicate peace process.
Iran seeks proof of implementation
Iran has maintained that it is prepared to begin technical discussions following the extension of the ceasefire for at least 60 days under the new agreement.
However, Iran's semi-official Tasnim News Agency reported that Tehran wants to see practical signs that Washington is implementing the interim accord before engaging in additional rounds of peace negotiations.
Also Read: Islamabad MoU will help rebuild Iran, PM tells Iran's president
The report also stated that Iran had not yet confirmed whether its delegation would travel to Geneva for the anticipated talks.
Iranian authorities have not immediately commented on the White House announcement regarding Vance's withdrawal.
Fragile ceasefire faces challenges
The diplomatic uncertainty comes at a critical moment for a conflict that has already claimed at least 7,000 lives, disrupted energy markets, and rattled global investors.
Questions remain over whether a lasting ceasefire can be secured, particularly as regional tensions continue to simmer.
Israel, which was not involved in the U.S.-Iran negotiations and has publicly distanced itself from the agreement, has continued military operations against the Iranian-backed Hezbollah movement in Lebanon.
The ongoing fighting has fueled concerns about the durability of the broader peace framework.
In Washington, several Republican allies of US President Donald Trump have voiced concerns that the administration conceded too much in exchange for ending the conflict.
Also Read: PM Shehbaz's visit to Switzerland cancelled
Before negotiations progressed, Trump had repeatedly demanded Iran’s "unconditional surrender" as a prerequisite for ending the war. However, the final memorandum offers significant economic incentives to Tehran, including sanctions relief, access to frozen assets worth tens of billions of dollars, and immediate US waivers allowing Iranian oil exports.
Critics argue that the agreement falls short of several key objectives outlined by Trump at the start of the conflict.
When the United States and Israel launched military operations nearly four months ago, Trump said his goals included eliminating Iran’s nuclear capabilities, preventing Tehran from threatening neighboring states, curbing support for anti-Israel militant groups, and creating conditions for political change within Iran.
The agreement, however, does not fully achieve those objectives.
Iran's leadership signals tough negotiations
Iran’s Supreme Leader Ayatollah Mojtaba Khamenei said Trump signed the agreement "out of desperation" and suggested that upcoming negotiations on Iran’s nuclear program would be difficult.
"If the American side wants to be too demanding, we will not accept it," Khamenei said in a written statement.
The agreement grants negotiators 60 days to reach a broader understanding on Iran’s nuclear activities, unless both sides agree to extend the deadline.
It also establishes a $300 billion reconstruction fund for Iran and includes several additional financial incentives.
Meanwhile, Vice President Vance has indicated that Washington will continue seeking restrictions on Iran’s long-range missile capabilities.
Nuclear program remains central challenge
Under the agreement, Iran reaffirmed its long-standing position that it does not seek to develop nuclear weapons.
Tehran also agreed to onsite down-blending of its stockpile of highly enriched uranium and accepted continued inspections by the International Atomic Energy Agency (IAEA) under its obligations as a member of the Nuclear Non-Proliferation Treaty.
However, Iran rejected Trump's proposal to remove enriched uranium from the country entirely.
Also Read: Khamenei says he held different view on US memorandum
US officials insist the upcoming negotiations could produce a stronger nuclear agreement than the 2015 accord between Iran and world powers, which Trump withdrew from during his first term.
Critics, however, argue that Iran enters the talks from a stronger position after surviving military attacks, maintaining influence over the Strait of Hormuz, and securing important sanctions waivers.
Strait of Hormuz remains key issue
Iran has said it will continue exercising control over the Strait of Hormuz in cooperation with neighboring Oman.
Tehran also intends to charge ships fees for new services introduced following the conflict, although Iranian officials say no fees will be imposed during the current 60-day negotiation period.
The strategic waterway remains one of the most critical routes for global energy shipments.
While diplomatic efforts continue, violence in Lebanon has shown no signs of easing. Israeli forces launched fresh airstrikes early Thursday despite growing international pressure for de-escalation.
More than one million people have reportedly been displaced by the fighting.
Also Read: Trump hails strong economic indicators after Iran agreement
Trump has repeatedly stated that he expects a complete ceasefire across all fronts. The agreement itself calls for the permanent termination of the conflict in Lebanon and emphasizes the country's territorial integrity and sovereignty.
However, Israel has said it does not intend to withdraw from Lebanese territory and recently published a new map showing an expanded occupation zone.
Trump has become increasingly critical of Israel's military operations in Lebanon, contributing to one of the most significant policy disagreements between Washington and Tel Aviv in decades.
Technical talks remain on hold
For now, preparations for the next phase of US-Iran negotiations remain inconclusive.
American officials say the delegation is ready to travel to Switzerland once arrangements are finalized, but no clear schedule has been announced.
With the ceasefire holding but tensions still high, the success of the agreement may depend on whether both sides can quickly move from diplomacy on paper to implementation on the ground.
