When Donald Trump returned to office, he did so on a promise that felt straightforward and deeply personal to many Americans: no more “endless wars.” “America First” was not framed as a grand theory of global order. It was framed as common sense. Stop sending American troops into conflicts that drag on for years. Stop spending trillions overseas while towns at home struggle. Put the country’s own people—its workers, its families, its veterans—at the center of decision-making again.

That is why the idea of launching a large-scale military campaign against Iran lands so heavily. Especially if it carries even a hint of regime change. For many who supported Trump precisely because he criticized those kinds of interventions, this does not feel like a minor shift in tactics. It feels like crossing a line.

Trump built much of his political identity around rejecting the foreign policy consensus that led to Iraq and Afghanistan. He spoke about those wars not in abstract geopolitical terms, but in human ones—lives lost, soldiers cycling through multiple deployments, families changed forever. He talked about the trillions of dollars spent and asked what that money might have done if invested in American cities, roads, factories, and schools instead. That argument resonated in places where people felt overlooked and economically squeezed. It was not isolationism; it was exhaustion.

A war with Iran, absent a direct and immediate attack on U.S. soil, risks reopening wounds many Americans thought were finally closing. Military action is never just a strategic calculation on paper. It sets in motion forces that are difficult to control. Objectives that sound clear at the outset—deterrence, stability, security—can blur as events unfold. If regime change becomes part of the equation, the uncertainty multiplies. Removing a government is one thing. What replaces it is another.

There are practical concerns, too, and they are not trivial. Wars cost money—vast amounts of it. Even before considering long-term commitments, defense spending would rise. In a country where people debate healthcare affordability, student debt, and crumbling infrastructure, those trade-offs are real. Budgets reflect priorities. A new conflict inevitably forces choices.

Then there is the global economy. Iran sits in a region critical to energy markets. A broader conflict in the Persian Gulf could disrupt oil flows and push up prices. That would not remain a distant headline. It would show up in everyday expenses—fuel, food, transportation. For working- and middle-class families who hoped for economic stability, those shocks would be immediate and tangible.

And history looms in the background. Iraq was supposed to be swift. Afghanistan was meant to be necessary but contained. Both became generational commitments. If the United States were to pursue regime change in Iran, the question would not end with military success. It would begin there. Who governs the day after? How is order maintained? How long does the United States stay involved? These are not abstract hypotheticals; they are lessons written in recent memory.

There is also a political reality that cannot be ignored. Trump’s coalition includes voters deeply skeptical of foreign entanglements. Some are libertarians wary of state power. Others are populists distrustful of what they see as a bipartisan Washington establishment too quick to intervene abroad. For them, avoiding new wars was not a side issue—it was central. A major conflict with Iran would test that bond of trust.

Internationally, the implications stretch even further. Allies may hesitate before fully aligning with another Middle Eastern intervention. Rivals may see distraction and opportunity. American power is not limitless; attention and resources directed to one region are, by definition, diverted from another. If the long-term goal is to strengthen the country’s global position, it’s fair to ask whether opening another military front advances that aim or complicates it.

At its core, this is not just a strategic debate. It is a question of consistency and credibility. A president who campaigned against “endless wars” carries a particular burden when considering a new one. The public deserves clarity—not slogans, but specifics. What is the mission? What defines success? And what, concretely, marks the end?

War is not an abstraction. It is young men and women in uniform. It is families waiting for phone calls. It is veterans who carry the experience with them long after headlines fade. Any decision to initiate a conflict—especially one of choice—must be weighed against that human cost.

If “America First” means anything enduring, it means placing the safety, prosperity, and stability of American citizens above ideological projects abroad. A regime-change effort in Iran would sit uneasily within that definition. The tension between promise and action would not be rhetorical; it would be deeply felt.

In the end, the question is simple, even if the answer is not: has the country truly learned from the past two decades, or is it about to revisit a familiar path? The choice made now will shape not only a presidency, but the direction of American foreign policy—and the lives tied to it—for years to come.

© Eurasia Review