Planned US-Iran implementation talks in Switzerland were postponed after Iran refused to send its delegation while Israeli military operations continued in Lebanon, according to the Swiss Ministry of Foreign Affairs, US officials, and Iranian sources [2][23][39]. A new ceasefire between Israel and Hezbollah, brokered by the United States, Qatar, and Iran, took effect at 4 p.m. Lebanon time on Friday, June 19 [3][19][25]. Within hours, Israeli airstrikes killed at least five people in the southern Lebanese town of Arab Salim, and further strikes hit over a dozen locations across the Nabatieh area [5][8][26].
The postponement followed a day of fighting in which Israeli strikes killed at least 47 people and wounded 97 across southern Lebanon and the Bekaa valley, while Hezbollah killed four Israeli soldiers in a tank ambush using an explosive drone [3][12][25]. The violence disrupted the opening of technical negotiations meant to advance the US-Iran memorandum of understanding signed in Islamabad, which includes a 60-day window to negotiate the future of Iran's nuclear program and calls for an end to hostilities on all fronts, including Lebanon [7][25][31].
Iran's Foreign Ministry spokesperson Ismail Bagaei held the United States directly responsible for the Israeli attacks, stating: "La República Islámica de Irán adoptará todas las medidas necesarias para salvaguardar sus intereses, su seguridad y sus derechos, así como los de sus aliados" (The Islamic Republic of Iran will take all necessary measures to safeguard its interests, its security, and its rights, as well as those of its allies) [9]. Iran's deputy foreign minister told Al Jazeera that Tehran remains ready to move forward on diplomacy but that the US must ensure Israel abides by the deal's terms [29][32]. Iran's chief negotiator Mohammad Bagher Ghalibaf warned: "In case of misconduct, breach of treaty and excess of the other side, we have no doubt that decisive response will be given to the enemy" [25].
Academic and policy analysts framed Iran's linkage of the Lebanon front to the nuclear deal as a deliberate test of Washington's credibility. Muhanad Seloom of the Doha Institute for Graduate Studies said: "If the United States is not able to stop Israel from attacking Lebanon, who will guarantee that in the future Israel won't attack Iran itself?" [1]. Trita Parsi of the Quincy Institute described Iran as "not joking" about the demand, calling it the deal's greatest vulnerability [1]. Former US official Mark Kimmitt countered that conditioning the deal on Lebanon was "very, very unwise" because "they can't control what Hezbollah is going to do, and the United States doesn't control what Israel is going to do" [1]. Ali Vaez of the International Crisis Group predicted the MoU would hold because "there is no better alternative," but warned that a broader agreement within 60 days would be "very difficult," forecasting an extended period in "MoU-land" [1].
Israel's ambassador to the United States, Yechiel Leiter, denied Iranian and Hezbollah claims of continued Israeli offensives, calling them "mentiras descaradas" (brazen lies), and stated that peace in Lebanon would come only "cuando Hezbollah, un grupo armado iraní asesino, sea destruido" (when Hezbollah, a murderous Iranian armed group, is destroyed) [14][15]. Israeli National Security Minister Itamar Ben Gvir called for collective punishment: "Lebanon must burn... For every tear shed by an Israeli mother, 1,000 Lebanese mothers must weep" [3][25]. Finance Minister Bezalel Smotrich called for "abrir las puertas del infierno" (opening the gates of hell) in Lebanon [10]. Prime Minister Benjamin Netanyahu stated Israel would continue occupying southern Lebanon and firing on Hezbollah threats "el tiempo que sea necesario" (for as long as necessary) [10].
President Donald Trump told NBC News he personally intervened: "You just gotta calm down sometimes and use your head" [12]. Vice President JD Vance issued a pointed warning to Israeli officials, stating that two-thirds of the defensive weapons protecting Israel in the last three months "were produced by American hands and funded by American taxpayers," and that anyone who considers Trump Israel's biggest problem "should wake up" [13]. El País reported that US intelligence agencies warned the Trump administration that Netanyahu is likely to undermine the Iran deal for domestic political survival, and that a Maariv poll showed Likud losing its lead for the first time in over a year [10]. A Hürriyet report cited a Channel 12 poll showing 71 percent of Israelis do not trust Trump to protect Israel's interests in a deal with Iran [13].
Hezbollah Secretary General Naim Qassem described the MoU as "a great victory" and a "pivotal point for Lebanon," thanking Iran for linking the Lebanese front to the deal [6]. James M. Dorsey of Singapore's Rajaratnam School of International Studies assessed that the MoU "virtually gives Iran everything it wanted and Trump everything he had" before the war, though the verdict depends on whether Israel is forced to abide by the deal's terms [6]. Israeli political analyst Dmitry Dubov told Novaya Gazeta Europe that the deal amounts to "предательство" (betrayal) or "кидалово" (a swindle), arguing it empowers Iran's most radical factions and strips Israel of the political support needed for future independent military action [17].
Lebanese President Joseph Aoun told US Secretary of State Marco Rubio that a "comprehensive ceasefire" ending Israeli attacks was needed for the next round of Washington talks to progress [3][12]. French Foreign Minister Jean-Noël Barrot stated: "This agreement provides for a cessation of hostilities, the Israeli government must respect it, and the United States in particular must exert all the necessary pressure on the Israeli government to ensure that this is the case" [31]. Pakistan's Prime Minister Shehbaz Sharif and Saudi Crown Prince Mohammed bin Salman pledged in a phone call to safeguard the peace process through "a firm commitment to dialogue and diplomacy" [7].
Civilian populations in Lebanon and Gaza described conditions that the ceasefire has not changed. Médecins Sans Frontières emergency coordinator Pierre Boulet-Desbareau described the situation in Nabatiyeh as "un piège mortel" (a deadly trap) where rescue teams cannot safely reach people [18][46]. Displaced Gazan Mourad Abu Zommar asked: "Wo kommen wir in diesem Deal vor?" (Where do we appear in this deal?) [33]. Gisha representative Shai Gruenberg stated that the ceasefire in Gaza exists only on paper, with people continuing to die and freedom of movement restricted by a shifting military line [33]. UN independent human rights experts warned the MoU is fundamentally incomplete because it fails to address abuses inside Iran, including 156 executions since the war began [20].
Financial markets have moved past the crisis. Portfolio manager Frank Lipowski of Flossbach von Storch stated: "Los mercados de capitales ya están operando sin tener en cuenta a Irán" (Capital markets are already operating without taking Iran into account), noting that investor attention has shifted to artificial intelligence [24].
The US State Department announced that new direct Israel-Lebanon talks will be held in Washington from June 23 to 25 [21][18]. US envoy Steve Witkoff and presidential envoy Jared Kushner were reported to be in or headed to Switzerland, with the Swiss government stating it remains ready to facilitate the postponed US-Iran negotiations [2][11][23].