The US appears poised to strike Iran within days. While the potential targets are largely predictable, the outcome is not.

If no last-minute deal can be reached with Tehran and President Donald Trump decides to order US forces to attack, the possible outcomes vary significantly.

1. Targeted, surgical strikes, minimal civilian casualties, a transition to democracy

US air and naval forces could conduct limited, precision strikes targeting military bases of Iran's Islamic Revolutionary Guards Corps (IRGC) and ballistic missile sites. An already weakened regime might topple, eventually leading to a democratic transition. However, historical precedents from Iraq and Libya suggest such outcomes are often fraught with chaos.

2. Regime survives but moderates its policies

This scenario, akin to the Venezuelan model, sees the regime intact but forced to moderate its support for violent militias and nuclear ambitions. However, given the regime's history of defiance, this is considered less likely.

3. Regime collapses, replaced by military rule

Many analysts believe this is the most probable outcome, as popular protests decline in the face of a strong security state. The IRGC could establish a more rigid military government amidst the aftermath.

4. Iran retaliates by attacking US forces and neighbors

Iran has vowed to retaliate against US strikes, potentially targeting US bases or allies in the region. This scenario raises concerns among US allies about their safety.

5. Iran retaliates by laying mines in the Gulf

Iran has previously mined shipping lanes, threatening global oil supplies. This act could escalate tensions significantly, impacting international trade.

6. Iran retaliates, sinking a US warship

A swarm attack involving drones and boats could pose a risk to US naval vessels, leading to severe humiliation and escalation in conflict.

7. Regime collapses, replaced by chaos

A power vacuum may lead to civil strife and ethnic tensions. Countries in the region fear that such chaos could trigger a humanitarian crisis, as seen in Syria and Yemen.

Ultimately, as military forces assemble near Iran's borders, the fear is that Trump may feel compelled to act, resulting in a conflict without clear goals or end in sight.