Tensions between the United States and Iran are reaching a critical point as Donald Trump sets a final deadline for Tehran to agree to a deal or face devastating military strikes. Trump has warned that if Iran does not comply, the US could target and destroy key infrastructure, including bridges and power plants, within hours. The ultimatum comes as negotiations continue behind the scenes, with conflicting signals about whether a diplomatic breakthrough is still possible. Iran has rejected a ceasefire proposal, insisting on a permanent end to the war, lifting of sanctions, and guarantees over control of the Strait of Hormuz. Tehran also maintains it will not negotiate under threats.