The third round of U.S.–Iran nuclear talks has begun in Geneva, with Oman mediating indirect negotiations over Tehran’s nuclear program. U.S. President Donald Trump has renewed threats of military strikes if no deal is reached, while Iran insists on its right to enrich uranium and refuses to discuss its ballistic missile program. U.S. Secretary of State Marco Rubio warned Tehran’s missile stance poses a major obstacle. Iran is expected to submit a counterproposal reportedly approved by Supreme Leader Ali Khamenei, as tensions and regional military deployments raise stakes.