High-level U.S.-Iran talks on their interim deal to end the war had a tense start Sunday in Switzerland. Tehran took offense at social media and news comments by President Donald Trump, who threatened to attack and told Iran’s president to watch what he says. The remarks complicated efforts by Vice President JD Vance and mediators from Pakistan and Qatar to keep Iran engaged in the discussions. The 60-day sprint aims to address thorny issues like Tehran’s nuclear program, the Strait of Hormuz, and the unfreezing of billions of dollars in Iranian assets.
Diplomatic Friction and the Lebanon Conflict
Iranian state media stated that talks entered a “difficult phase” and recessed after the publication of an insulting message by the U.S. President. Following the recess, the Iranian delegation met with Qatari mediators and left the negotiating site. However, an official with knowledge of the talks later noted that the Iranian delegation remains engaged and has not indicated an intention to leave.
Before diving into other matters, Iran wants the talks to focus on the conflict in Lebanon, where Israel is fighting Hezbollah. While a renewed ceasefire brokered on Saturday appeared to be holding, neither Israel nor Hezbollah signed the U.S.-Iran deal. Israeli Prime Minister Benjamin Netanyahu has vowed to keep forces in southern Lebanon, while Hezbollah refuses to halt attacks until Israel withdraws. Meanwhile, Trump warned on social media that Iran must stop its proxies in Lebanon or face severe military strikes.
Sharp Words Over the Nuclear Program
The initial agreement allows Tehran to sell oil freely, paves the way to tap into billions in frozen assets, and calls for Iran to dilute its stockpile of highly enriched uranium. However, Iranian President Masoud Pezeshkian declared Sunday that Iran will never back down from its right to enrich uranium. In response, Trump warned during a Fox News interview that the Iranian leader should watch his words, further threatening to take over Iran.
Political Scrutiny and Market Reactions
Vance plans to stay in Switzerland for a day or two, leaving detailed negotiations to Steve Witkoff and Jared Kushner. The deal has already drawn searing criticism from Republican hard-liners, who unfavorably liken it to the Obama-era nuclear agreement. Additionally, controversy remains over the Strait of Hormuz; while the pact allows commercial vessels to pass without charge for 60 days, Trump threatened Saturday to levy U.S. tolls if a final deal is not reached. Despite the tension, the Trump administration has worked to reassure global markets, and oil futures dropped almost 8% following the initial deal’s announcement.
Reference
Madhani, A., Kim, S. M., & Keaten, J. (2026, 21 junio). Vance and Iranian officials hold talks in Switzerland | AP News. AP News. https://apnews.com/article/iran-vance-trump-nuclear-negotiations-2edf9268aae550883252080014013963?user_email=bd2c428b35d2f2d999bc6f7e665bad1355a8dd3247b2afc8121729c30cd9a01a&utm_medium=APNews_Alerts&utm_source=Sailthru_AP&utm_campaign=NewsAlert_Jun21_2026_09:30AM&utm_term=AP%20News%20Alerts