Peace talks between Iran and the United States in Switzerland have been postponed following Israeli strikes in southern Lebanon. Under the memorandum of understanding reached earlier this week, Washington and Tehran have committed to an "immediate and permanent cessation" of hostilities, including in Lebanon. However, repeated Israeli attacks on Beirut have threatened to derail the diplomatic process, fueling tensions between Washington and Tel Aviv. Will the United States and Iran be able to resume negotiations soon? More importantly, can the two sides reach a lasting and peaceful settlement of their differences? Even if an agreement is achieved, will it be durable enough to withstand the region's deep-seated tensions and recurring crises?