On June 21, 2026, President Trump issued a stern warning via Truth Social, threatening to respond forcefully against Iran if it does not promptly prevent Hezbollah from escalating tensions in Lebanon, even as US and Iranian representatives were engaged in discussions in Switzerland. Overnight on Saturday, Israel conducted airstrikes on Hezbollah positions in southern Lebanon, resulting in over a dozen fatalities. Iran has maintained that halting hostilities in Lebanon is a crucial, non-negotiable requirement for any comprehensive nuclear agreement, while Israeli Prime Minister Netanyahu asserted that Israel is not obliged to adhere to the US-Iran ceasefire pact. Vice President Vance, who is participating in the Switzerland negotiations, remarked that the situation in Lebanon had stabilized, but he included an urgent session regarding Lebanon on the agenda for the talks.
