U.S. President Donald Trump and Iran’s leader exchange threats as international mediators work to prevent a worsening collapse of a troubled nuclear agreement. According to reporting from AP and other coverage that repeats the same development, tensions escalate through public rhetoric from both sides, while intermediaries continue efforts aimed at keeping the deal on track or reaching an alternative arrangement. The mediation process is described as urgent, with negotiators attempting to address issues that have undermined trust and compliance under the agreement. Both Washington and Tehran signal hardline positions, suggesting limited flexibility as they attempt to influence negotiations through pressure and warnings. At the same time, mediators are portrayed as actively engaging to reduce the risk that the dispute spirals further, including by exploring possible pathways to stabilize talks and maintain some form of framework. The situation remains fluid, with the latest exchanges centered on threats tied to how each side expects the other to behave as negotiations continue.