Figuring the Odds of an Israel-Iran Nuclear War: A Complex Task for … – JURIST
Louis Ren Beres, Emeritus Professor of International Law at Purdue University, discusses the possibility of an Iran-Israel nuclear conflict.
For by Wise Counsel, Thou Shalt Make Thy War.
Proverbs, 24,6
As a matter of logic, an Israel-Iran nuclear exchange is presently out of the question. Though energetically pursuing a military nuclear capability, the Shiite Republic still has a formidable way to go before it can claim any credible status as an operational nuclear power. From Israels standpoint, prudent survival preparations should now take variously multiple and overlapping forms. In this connection, Israel likely understands that nothing short of a massive non-nuclear preemption could summarily stop Tehrans nuclearization (a nuclear preemption is essentially inconceivable), but that even if such a defensive first-strike were to meet the authoritative tests of anticipatory self-defense under international law, its overall results would be catastrophic.
What next for Jerusalem? Always, Israeli strategists should examine the countrys available security options as an intellectual rather than political task. This is an overriding and invariant imperative.
There is more. This cautionary conclusion about planning is compelling, inter alia, because any tactically successful conventional preemption against Iranian weapons and infrastructures would come at more-or-less unacceptable costs. Already, in 2003, when this writers Project Daniel Group presented an early report on Iranian nuclearization to then-Israeli PM Ariel Sharon, prospective Iranian targets were more directly threatening to Israel than was Iraqs nuclear Osiraq reactor on June 7, 1981.
To the limited extent that they could be estimated, the plausible risks of an Israel-Iran nuclear war would ultimately depend upon whether such a conflict was intentional, unintentional, or accidental. Apart from applying this critical three-part distinction to their analysis, there could be no good reason to expect any usefully systematic strategic assessments emerging from Tel Aviv (MOD/IDF). Once applied, however, Israeli planners should understand that their complex subject is entirely without useful precedent.
This uniqueness represents a quality of critical predictive importance. The peremptory rules of logic and mathematics preclude any meaningful assignments of probability in matters that are unprecedented or sui generis. To come up with meaningful estimations of probability, these predictions would first have to be based upon the determinable frequency of relevant past events. Prima facie, there have been no such events; unassailably, there have been no nuclear wars.
Still, it is essential that competent Israeli strategic analysts do their best to examine all current and future nuclear risks from Iran. To some ascertainable extent, it may be sensible for them to study what is currently happening between Washington and Pyongyang as a model for calculating Israels long-term nuclear perils. Looking back, in examining the more-or-less overheated rhetoric that had emerged from US President Donald J. Trump and North Korean President Kim Jung-Un, neither leader was paying sufficiently close attention to the grave risks of an unintentional or accidental nuclear war.
This means, among other things, that both Trump and Kim seemed to assume the other leaders decisional rationality and the primacy of decisional intention. If no such mutual assumption had existed, it would have made no sense for either president to deliberately strike existential retaliatory fear in the heart of the other. What are the lessons here for Israel vis--vis Iran? Should Israel similarly assume a fully rational adversary in Iran? To be sure, any such assumption would be more or less reassuring in Jerusalem, but would it also be correct?
During his dissembling tenure, Donald J. Trump, then US president, openly praised feigned irrationality as a tangible US security strategy. But such a preference could never be actionable without incurring assorted dangers, for America or for Israel. Although neither Israel nor Iran might actually want a war, either or both players could still commit catastrophic errors during competitive searches for escalation dominance. The only predictable element here would be the scenarios inherent unpredictability.
There is more. An unintentional or inadvertent nuclear war between Israel and Iran could take place not only as the result of misunderstandings or miscalculations between fully rational leaders, but also as the unintended consequence of mechanical, electrical, or computer malfunctions. This includes hacking interference, and should bring to mind a corollary distinction between unintentional/inadvertent nuclear war and an accidental nuclear war. Though all accidental nuclear war must be unintentional, not every unintentional nuclear war would be generated by accident. An unintentional or inadvertent nuclear war could sometime be the result of misjudgments (both fundamental and seemingly trivial) about enemy intentions.
In war, says Prussian strategist Carl von Clausewitz famously in his classic On War, everything is simple, but the simplest thing is difficult. In fashioning a successful endgame to any future nuclear confrontation with Iran, it would be vital for Israels leaders to understand that this sort of crisis is about much more than maximizing any correlation of forces or missile-interception capabilities. It will be about imaginative intuition and variously antecedent notions of dialectical thinking.
There are many complex details. As a nuclear war has never been fought, what will be needed in Jerusalem/Tel Aviv is more broadly intellectual guidance than Israel could ever reasonably expect from even its most senior military officers. In essence, ipso facto, there are no recognizable experts on fighting a nuclear war, not in Jerusalem, not in Tehran, not anywhere. It was not by accident that the first capable theoreticians of nuclear war and nuclear deterrence in the 1950s were academic mathematicians, physicists and political scientists.
There remains one last point about any still-estimable risks of an Israel-Iran nuclear war. From the standpoint of Jerusalem, the only truly successful outcome could be a crisis or confrontation that ends with a reduction of Iranian nuclear war fighting capabilities and intentions. It would represent a serious mistake for Israel to settle for bloated boasts of victory that are based only upon a one-time avoidance of nuclear war. Israel ought never to be taking existential risks with Tehran if the best anticipated outcome could only be status quo ante bellum.
Providing for Israeli national security vis--vis a still-nuclearizing Iran ought never to become a seat-of-the-pants game that is, the sort of visceral stance taken earlier by US President Donald J. Trump opposite North Korea. Without any suitably long-term, systematic and deeply-thoughtful plan in place for avoiding atomic war with this determined adversary, a nuclear conflict that is deliberate, unintentional or accidental could ensue. At every stage of its continuously corrosive competition with Tehran, Israel should avoid losing sight of the only rational use for its presumptive nuclear weapons and doctrine. That residual use, a product of abundantly wise counsel, concerns stable nuclear deterrence.
LOUIS REN BERES (Ph.D., Princeton, 1971) is Emeritus Professor of International Law at Purdue. His twelfth and most recent book is Surviving Amid Chaos: Israels Nuclear Strategy (2016). In 2003, Professor Beres was Chair of Project Daniel in Israel (regarding Irans nuclear weapons, prepared especially for PM Ariel Sharon). He has published in The Bulletin of the Atomic Scientists; The Jerusalem Post; Israel Defense (Tel Aviv); BESA (Israel); INSS (Israel); JURIST; Air-Space Operations Review (USAF); The Atlantic; Yale Global; Harvard National Security Journal (Harvard Law School); International Security (Harvard); Oxford University Press Yearbook on International Law & Jurisprudence; World Politics (Princeton); Parameters: Journal of the US Army War College (Pentagon); The Strategy Bridge; International Journal of Intelligence and Counterintelligence; The War Room (Pentagon); Modern War Institute (West Point); Horasis (Zrich) and The New York Times.
Suggested citation: Louis Rene Beres, Figuring the Odds of an Israel-Iran Nuclear War: A Complex Task for Logic, Mathematics and Law, JURIST -Academic Commentary, April 13, 2023 https://www.jurist.org/commentary/2023/04/Louis-Beres-Israel-Iran-nuclear-war/.
This article was prepared for publication by Rebekah Malkin, Co-Managing Commentary Editor. Please direct any questions or comments to she/they/them at commentary@jurist.org
Opinions expressed in JURIST Commentary are the sole responsibility of the author and do not necessarily reflect the views of JURIST's editors, staff, donors or the University of Pittsburgh.
See the original post:
Figuring the Odds of an Israel-Iran Nuclear War: A Complex Task for ... - JURIST
- The U.S. Start-Up Making Low-Cost Interceptors for the Iran War - The New York Times - August 23rd, 2026 [August 23rd, 2026]
- Indian shares likely to open higher; caution ahead of new Iran sanctions - Reuters - August 23rd, 2026 [August 23rd, 2026]
- Oil prices slip over $1 as US weighs D-Day Iran sanctions; Strait of Hormuz shipping risks in focus - The Times of India - August 23rd, 2026 [August 23rd, 2026]
- US-Iran war latest: Bessent promises economic D-Day ahead of expected sanctions - CNN - August 23rd, 2026 [August 23rd, 2026]
- Iran war live: Tehran warns of earthquake-like retaliation over Trumps threats - The Independent - August 23rd, 2026 [August 23rd, 2026]
- Iran official says support for new sanctions would be an 'act of war,' and other Middle East news - AP News - August 23rd, 2026 [August 23rd, 2026]
- China Actively Committed to Iran Talks With Tensions Rising - Bloomberg.com - August 23rd, 2026 [August 23rd, 2026]
- Iran faces massive new triple-threat as Hormuz begins to open, cash gets tight and pols call to end the war - New York Post - August 23rd, 2026 [August 23rd, 2026]
- Iran war could last deep into 2027 as the Strait of Hormuz isn't that closed, allowing more oil out - Fortune - August 23rd, 2026 [August 23rd, 2026]
- After Six Months of War, Trump Is Still Losing to Iran - The New Yorker - August 23rd, 2026 [August 23rd, 2026]
- Iran threatens military response to US sanctions - Reuters - August 23rd, 2026 [August 23rd, 2026]
- Iran Warns Gulf States Not to Join Trumps Economic War - The New York Times - August 23rd, 2026 [August 23rd, 2026]
- Iran says new sanctions threatened by 'desperate' US will fail - Reuters - August 23rd, 2026 [August 23rd, 2026]
- Iran official says support for new sanctions would be an act of war - Politico - August 23rd, 2026 [August 23rd, 2026]
- Ahead of tough new U.S. sanctions, Iran criticizes 'extraterritorial sovereignty' - CNBC - August 23rd, 2026 [August 23rd, 2026]
- Mike Pence warns Trump hell have to go in and finish the job in Iran - Yahoo - August 23rd, 2026 [August 23rd, 2026]
- Iran official says support for new sanctions would be an 'act of war,' and other Middle East news - ABC News - Breaking News, Latest News and Videos - August 23rd, 2026 [August 23rd, 2026]
- Iran security chief threatens neighbors against economic measures, and other Mideast developments - AP News - August 23rd, 2026 [August 23rd, 2026]
- Pence: US must prepare for inevitable action against Iran - The Hill - August 23rd, 2026 [August 23rd, 2026]
- White House promises full-throttle economic warfare against Iran with new plan for sanctions - CBS News - August 23rd, 2026 [August 23rd, 2026]
- Iran official says support for new sanctions would be an 'act of war,' and other Middle East news - Yahoo - August 23rd, 2026 [August 23rd, 2026]
- Trump is winning the Iran war stay the course - New York Post - August 23rd, 2026 [August 23rd, 2026]
- Trump warns of economic D-Day against Iran, but Tehran is well acquainted with sanctions - AP News - August 23rd, 2026 [August 23rd, 2026]
- Mike Pence warns Trump hell have to go in and finish the job in Iran - The Independent - August 23rd, 2026 [August 23rd, 2026]
- Ampol profit surges nearly five-fold as Iran war boosts refining margins - Reuters - August 23rd, 2026 [August 23rd, 2026]
- Voices from the Arab Press: Economically strangling Iran vs falling into a trap - The Jerusalem Post - August 23rd, 2026 [August 23rd, 2026]
- Iran touts talks on regional alliances as US prepares to announce new sanctions - Fox News - August 23rd, 2026 [August 23rd, 2026]
- US vows economic D-Day as Iran threatens to halt all oil exports By Reuters - Investing.com - August 23rd, 2026 [August 23rd, 2026]
- Aug. 23: Wildfires force evacuations, U.S. economic battles against Iran and Canada - NBC News - August 23rd, 2026 [August 23rd, 2026]
- See How China Weathered the Iran Oil Shock - WSJ - August 23rd, 2026 [August 23rd, 2026]
- Graham called yearslong push for war with Iran the best thing Ive ever done in new footage - CNN - July 26th, 2026 [July 26th, 2026]
- Unreleased Documentary Footage Captures Grahams Obsessive Push for Iran War - WSJ - July 26th, 2026 [July 26th, 2026]
- Netanyahu: Iran conflict ends when regime falls or gives up its nuclear program - The Times of Israel - July 26th, 2026 [July 26th, 2026]
- Netanyahu reined in Lindsey Grahams obsessive push to widen Iran war, footage shows - Ynetnews - July 26th, 2026 [July 26th, 2026]
- US strikes 'on a hold,' as talks, battle for Strait of Hormuz control loom with Iran - Fox News - July 26th, 2026 [July 26th, 2026]
- Live updates: Iran operations on a hold after almost two weeks of consecutive US strikes, source says - CNN - July 26th, 2026 [July 26th, 2026]
- Will America launch another massive attack on Iran? - The Economist - July 26th, 2026 [July 26th, 2026]
- US pauses attacks on Iran for a second day as peace talks continue - The Guardian - July 26th, 2026 [July 26th, 2026]
- Trump's Aides Reveal New Levels of Erratic Behavior Over Iran War - The Daily Beast - July 26th, 2026 [July 26th, 2026]
- US, Iran Extend Pause in Strikes as Oman Holds New Hormuz Talks - Bloomberg.com - July 26th, 2026 [July 26th, 2026]
- Iran war latest: 'They would use it if they had it' - Trump insists Iran cannot have a nuclear weapon - Sky News - July 26th, 2026 [July 26th, 2026]
- Iran threatens to expand war if US resumes strikes, which it says Israel is pushing for - The Times of Israel - July 26th, 2026 [July 26th, 2026]
- What to know about Iran's Pickaxe Mountain, home to an underground nuclear site threatened by Trump - AP News - July 26th, 2026 [July 26th, 2026]
- Vance, Caine raised concerns about escalating war in Iran, sources say as US pauses consecutive nights of strikes - CNN - July 26th, 2026 [July 26th, 2026]
- US pauses attacks on Iran for a second straight day and Tehran does too - Orange County Register - July 26th, 2026 [July 26th, 2026]
- Katy Perry deeply appalled over White House using her song in Iran war video - The Guardian - July 26th, 2026 [July 26th, 2026]
- It Isnt Just Pickaxe: Trumps Other Potential Nuclear Targets in Iran - WSJ - July 26th, 2026 [July 26th, 2026]
- Iran Journey Reveals Societys Wartime Defiance and Hope - The New York Times - July 26th, 2026 [July 26th, 2026]
- CBS News poll finds Iran conflict marked by feelings of uncertainty; most say it's more difficult than Trump had expected - CBS News - July 26th, 2026 [July 26th, 2026]
- Military Families Express Outrage After Pentagon Lowers Number of U.S. Troop Deaths in Iran War - The New York Times - July 26th, 2026 [July 26th, 2026]
- Ukraine war briefing: Iran accuses Kyiv of deadly attack on Iranian vessel in Caspian Sea - The Guardian - July 26th, 2026 [July 26th, 2026]
- Iran war spreads to Red Sea and Caspian, Gulf quiet as US forgoes strikes - Reuters - July 26th, 2026 [July 26th, 2026]
- Airstrikes have paused and talks are pressing forward. But can the US and Iran take the off-ramp? - AP News - July 26th, 2026 [July 26th, 2026]
- The U.S. and Iran pause attacks on each other for a 2nd day as Tehran talks with Oman over Hormuz - Fortune - July 26th, 2026 [July 26th, 2026]
- Iran reports first night without new US strikes as Houthis attack Saudi Arabian city - Fox News - July 26th, 2026 [July 26th, 2026]
- U.S. and Iran pause air strikes as talks show signs of progress - The Globe and Mail - July 26th, 2026 [July 26th, 2026]
- Opinion | I was a diplomat in Iran. Two rules explain its actions. - The Washington Post - July 26th, 2026 [July 26th, 2026]
- Trump is giving Iran talks 'a little bit of room,' US ambassador to UN says - Reuters - July 26th, 2026 [July 26th, 2026]
- How Russia helped build Iran into a strategic partner against the West - analysis - The Jerusalem Post - July 26th, 2026 [July 26th, 2026]
- U.S. forgoes strikes on Iran, but conflict escalates in the Red Sea - NBC News - July 26th, 2026 [July 26th, 2026]
- US has spent $37.5B on Iran war, Hegseth says at heated Senate hearing - USA Today - July 21st, 2026 [July 21st, 2026]
- Israel remains on sidelines of US-Iran fight, which for Jerusalem is just fine for now - The Times of Israel - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth grilled over growing cost of war with Iran - NBC News - July 21st, 2026 [July 21st, 2026]
- Trump Has Only Terrible Choices With Iran - The Atlantic - July 21st, 2026 [July 21st, 2026]
- Hegseth asks for billions for the Iran war, is there an end game? - NPR - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - KCRA - July 21st, 2026 [July 21st, 2026]
- Opinion | The U.S. military's escalating strikes in Iran may be legal. That doesnt make them justified. - MS NOW - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - WBAL-TV - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - WYFF - July 21st, 2026 [July 21st, 2026]
- Trump says will be hitting Iran's Pickaxe Mountain nuclear complex 'pretty soon' - France 24 - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - WESH - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - WDSU - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - KETV - July 21st, 2026 [July 21st, 2026]
- Pentagon Identifies Another Soldier Killed in Iran War - The New York Times - July 21st, 2026 [July 21st, 2026]
- Secretary Hegseth testifies on Capitol Hill as Iran conflict costs rise to $37.5 billion - KSBW - July 21st, 2026 [July 21st, 2026]
- The Iran wars big oil mystery: No one seems to want it - CNN - July 21st, 2026 [July 21st, 2026]
- Second critical waterway threatened by Iran war - CNN - July 21st, 2026 [July 21st, 2026]
- Iran is evading U.S. defenses to kill and wound American soldiers it's not just that "one leaked through" - CBS News - July 21st, 2026 [July 21st, 2026]
- July 20, 2026 US completes more strikes against Iran after Trump warning to Tehran - CNN - July 21st, 2026 [July 21st, 2026]
- Pentagon Withheld Dozens of U.S. Military Injuries in Iran War - The New York Times - July 21st, 2026 [July 21st, 2026]