1
Iran's nuclear infrastructure destroyed; program set back a decade
Discussed by: Foundation for Defense of Democracies, Israeli defense analysts, some US officials
Continued strikes on Natanz, Fordow, and the deeply buried Pickaxe Mountain facility, combined with the loss of senior leadership and scientific personnel, render Iran's enrichment program inoperable for years. The IAEA gains access to verify dismantlement. This would require penetrating underground facilities that have so far survived surface-level bombardment — and would depend on Iran's new leadership accepting terms rather than pursuing covert reconstruction.
2
War escalates into prolonged regional conflict
Discussed by: Arms Control Association, European foreign ministers, UN Secretary-General Guterres
Iran's unprecedented attacks on all six Gulf states, the Strait of Hormuz closure, and the Diego Garcia strike signal that the conflict is expanding beyond a contained air campaign. If Iran successfully strikes a major energy facility or demonstrates a reliable long-range missile capability, the war could draw in additional combatants and permanently reshape Middle Eastern alliances. The absence of ceasefire negotiations and the US-Israeli divergence on objectives increase this risk.
3
Negotiated settlement: Iran accepts permanent enrichment limits under verification
Discussed by: Former US diplomats, Oman's foreign ministry, arms control advocates
The Omani-brokered breakthrough on February 27 showed that Iran was willing to accept permanent enrichment restrictions and full IAEA verification before the strikes began. If the military campaign reaches a point of diminishing returns — or if domestic US or Israeli political pressure mounts — a return to that framework is possible. Iran's March 15 offer to dilute enriched uranium suggests the door is not fully closed, but its preconditions (permanent end to strikes, compensation) remain far from any US or Israeli position.
4
Iran accelerates covert nuclear weapons program
Discussed by: Nonproliferation analysts, historical precedent researchers (citing Iraq post-Osirak)
The historical record shows that Israel's 1981 strike on Iraq's Osirak reactor motivated Saddam Hussein to launch a covert weapons program that hadn't existed before. Iran possesses far more scientific expertise, dispersed facilities (including the unmonitored Pickaxe Mountain tunnel complex), and an unknown number of centrifuges produced since barring IAEA monitoring in 2021. Military strikes that destroy verification infrastructure without eliminating all capability could push Iran toward a covert breakout rather than away from one.
5
Radiological accident at Bushehr triggers international intervention
Discussed by: IAEA Director General Grossi, European foreign ministers, UN Secretary-General
A direct hit on Bushehr's reactor or spent fuel pools could release radioactive material across the Persian Gulf region, affecting millions in Iran, Iraq, and the Gulf states. Such an accident would likely trigger emergency UN Security Council sessions, NATO involvement, and a humanitarian crisis that could force an immediate ceasefire. The IAEA has explicitly warned that strikes on civilian nuclear power plants cross 'the reddest line' of nuclear safety.
6
US air superiority challenged; campaign shifts to standoff weapons and cyber operations
Discussed by: Pentagon analysts, defense contractors, military strategists
The downing of two US warplanes on April 4 demonstrates that Iran's air defenses have adapted or been upgraded. If losses continue, the US may shift from manned aircraft to cruise missiles, drones, and cyberweapons—potentially extending the campaign's duration while reducing immediate escalation risk. This could also signal to Israel that the window for kinetic operations is narrowing.
7
International pressure forces ceasefire; Iran accepts enrichment limits under IAEA verification
Discussed by: UN diplomats, European Union officials, arms control advocates
The expansion to civilian nuclear infrastructure and the risk of a radiological accident may trigger sufficient international pressure—particularly from Europe, China, and Russia—to force both sides to the negotiating table. Iran's March 15 offer to dilute enriched uranium could form the basis for a settlement that trades permanent enrichment restrictions and full IAEA monitoring for an end to strikes and sanctions relief.
