For nearly two millennia, the Christian intellectual tradition has maintained that war, while sometimes permissible, is never presumptively just. The burden of proof always falls on the party making war, not on the party resisting it. Augustine of Hippo laid the groundwork in the fifth century. Thomas Aquinas refined it in the thirteenth. Their framework has endured because it is rigorous, demanding, and difficult to satisfy. It was designed to be difficult to satisfy. War kills people, and the Christian faith holds that every human person bears the image of God.
The war launched by the United States and Israel against Iran on February 28, 2026 fails every criterion of the just war tradition. Not most of them. All of them.
Legitimate Authority
Aquinas held that war must be waged by a sovereign authority with the responsibility and competence to make such a decision. In the American constitutional order, that authority rests with Congress. Article I, Section 8 is unambiguous: Congress shall have the power to declare war. Not the president. Not the secretary of defense. Not a foreign head of state calling from Jerusalem.
On March 5, the House of Representatives voted on a War Powers Resolution to halt Trump’s unauthorized war. It failed 212–219, but the very fact that it was brought to a vote – after the bombing had already begun – tells you everything about the constitutional posture of this conflict. The war was started without congressional authorization. Only two Republicans, Thomas Massie and Warren Davidson, voted to reassert the legislature’s war powers. The executive branch launched a regime-change war against a nation of ninety million people on its own initiative, and Congress, rather than checking that power, acquiesced after the fact.
Secretary of State Marco Rubio has admitted that the United States launched the war in part because Israel was planning to attack Iran unilaterally, and Washington decided to join rather than restrain. This is not sovereign deliberation. This is a tail wagging a dog into a catastrophe. The criterion of legitimate authority is not met.
Just Cause
The classical just war tradition permits war only to correct a grave, public evil – typically an act of aggression against the party going to war or against innocents it has a duty to protect. What was the grave evil that Iran inflicted on the United States?
President Trump, in his State of the Union address on February 24, accused Iran of reviving efforts to build nuclear weapons and possessing advanced missile capabilities threatening the United States and Europe. But the administration’s own intelligence community had reached the opposite conclusion. A classified National Intelligence Council report, completed roughly one week before the attack, found that even a large-scale assault was unlikely to oust the Iranian government. More critically, the intelligence community has never established that Iran was building a nuclear weapon. The International Atomic Energy Agency’s own director acknowledged on air that the Agency had no proof of a systematic Iranian effort to build a bomb.
We have seen this before. In 2003, the United States invaded Iraq on the basis of claims about weapons of mass destruction that turned out to be fabricated. As multiple observers have noted, the rhetorical pattern is virtually identical: unproven allegations of WMDs, claims of imminent threat, and a rush to war that preempts the diplomatic process. The Iranian foreign minister was saying a historic deal was within reach when the bombs fell. The Omani foreign minister, mediating the talks, confirmed that Tehran had agreed to significant concessions. The United States bombed anyway.
There is no just cause here. There is a manufactured one.
Hellbound and Down 