Washington has discovered a new category of conflict. A war that cannot be called a war. JD Vance now argues that the confrontation with Iran should not be described as such because major combat operations ended several weeks ago. The distinction might make sense inside a Pentagon briefing room. Outside it, the definition is becoming harder to defend. Eighteen American servicemen have died. Hundreds have been wounded. US aircraft are again striking Iranian military installations. Iran is firing missiles and drones at American bases across the Middle East and attacking commercial shipping through the Strait of Hormuz. The Pentagon had already estimated the cost of the conflict at $37.5 billion in July, while the administration requested another $67 billion in defence funding. If this is not a war, it is becoming remarkably expensive for something else.

The semantic debate matters because it reveals a much deeper strategic problem. The United States is conducting a military campaign without a clearly defined political end-state. Iran has not capitulated. Washington has not accepted Tehran’s conditions. Formal negotiations have effectively stopped. The Strait of Hormuz remains vulnerable. And six months after a conflict Donald Trump initially expected to resolve quickly, both countries are still exchanging fire. A Republican member of the House Armed Services Committee described the situation more accurately: militarily, the two sides are stuck. That is the real problem.

America is attempting to achieve unlimited political objectives through limited military pressure. Prevent Iran from obtaining a nuclear weapon. Break its economic capacity. Keep Hormuz open. Protect Gulf allies. Reduce Iranian regional influence. Avoid another large Middle Eastern war. And do all of this without imposing unacceptable costs on American voters. Those objectives are increasingly difficult to reconcile. Iran has understood the asymmetry. It does not need to defeat the United States militarily. It needs to survive. That dramatically lowers the threshold for what Tehran can consider a success. Every month the regime remains intact, every tanker threatened in Hormuz, and every increase in American fuel prices strengthens Iran’s argument that Washington cannot impose its preferred outcome at an acceptable cost.

For the US, survival is obviously not victory. Washington needs results. That makes time work differently for the two sides. This is why Hormuz remains Iran’s most effective weapon. Before the conflict, roughly one-fifth of global oil and LNG passed through the Strait. Iran cannot permanently close it without damaging itself, but it does not need to. It only needs to keep navigation uncertain enough to raise insurance, freight and energy prices. Brent has returned towards $95 a barrel. US diesel prices are at four-year highs. Petrol is above $4 a gallon nationally. Energy inflation is feeding directly into global bond yields and household purchasing power.

The battlefield has therefore moved into American domestic politics. That explains why language suddenly matters. Calling the conflict a war invites questions about casualties, duration, congressional authority, objectives and victory. Calling it a limited confrontation suggests something temporary and controllable. Markets, consumers and Iran may be less interested in the terminology. They are pricing the consequences. The administration’s economic strategy creates another contradiction. Scott Bessent is trying to suffocate Iran through sanctions, blocked exports and financial isolation. Iranian inflation is reportedly around 80%, oil revenues have been severely constrained, and access to essential imports has deteriorated. Economically, the pressure is substantial. Strategically, it has not yet produced capitulation. Instead, Tehran continues to attack shipping and regional military installations. This does not mean sanctions are failing. It means economic pain and political surrender are not the same thing. An increasingly constrained Iran may actually have greater incentives to use the assets Washington cannot easily neutralise: missiles, drones and Hormuz. This is how a supposedly limited conflict becomes structurally persistent. Neither side wants full-scale escalation. Neither side accepts the other’s terms. Both still possess instruments capable of imposing additional costs. And each believes the other may eventually become less willing to bear them. That is not peace. It is an equilibrium of controlled violence.

The danger is that controlled violence tends to become less controlled. One tanker sinks. One missile kills dozens of US troops. One strike hits the wrong infrastructure. Then the political definition changes faster than military strategy does. Vance may therefore be technically right that today’s conflict does not resemble the opening weeks of the campaign. But that may be the wrong benchmark. The question is not whether America is conducting major combat operations every day. It is whether Washington knows what political outcome would allow those operations to end permanently. Six months into the confrontation, that answer remains unclear. America does not have a problem naming the war. It has a problem explaining how it ends.