Iran-US war: Four scenarios as ceasefire expires and talks stumble

As the Iran-US ceasefire approaches its expiration date with negotiations at a standstill, analysts have outlined four potential scenarios for how the conflict could evolve. The war, which began in early 2026 following escalating tensions over Iran's nuclear program and regional influence, has already reshaped Middle Eastern geopolitics and strained global energy markets. The first scenario involves a temporary extension of the ceasefire while both sides engage in intensified diplomatic efforts, potentially mediated by European powers or China. The second possibility is a return to limited hostilities with targeted strikes and proxy engagements rather than full-scale war. The third scenario envisions a comprehensive peace agreement addressing Iran's nuclear program, regional influence, and economic sanctions. The fourth and most concerning scenario involves escalation to a broader regional conflict drawing in US allies and Iranian-backed militias across multiple countries. Each scenario carries significant implications for global oil prices, regional stability, and the balance of power in the Middle East. The outcome will likely depend on internal political pressures in both Washington and Tehran, as well as the willingness of other global powers to engage in conflict resolution.