There’s Great Risk in a “Limited” Ground War with Iran

Amid serious discussions about deploying U.S. ground troops in Iran, some argue that a limited deployment or targeted operations could achieve American objectives without leading to a broader conflict.

History suggests otherwise.

Most American wars did not begin as large-scale conflicts. They became them. Vietnam started with roughly 700 advisors and grew to over 500,000 troops. Afghanistan began with fewer than 20,000 troops, comparable to the ground forces being deployed to the Middle East currently, and peaked at more than 100,000. Syria started with a small footprint and expanded into a sustained presence of thousands.

When objectives are open-ended, what starts as limited rarely stays limited.

Once American forces are on the ground, the dynamics change. Risks multiply, objectives evolve, and pressure builds to reinforce and expand the mission. The presence of U.S. troops creates its own momentum, making disengagement more difficult over time.

That risk is especially acute in Iran.

The Risks of “Boots on the Ground”

A ground deployment in Iran would not be a contained or temporary action. It would introduce a range of serious and compounding risks:

• Mission creep is likely, not hypothetical. History shows that small deployments often expand into larger, longer conflicts.
• “Small footprint” options are misleading. Special operations or targeted raids would still require sustained support, logistics, and force protection. Removing Iranian nuclear material could take weeks or months.
• Iran can impose costs without winning conventionally. Its strategy relies on asymmetric tools that stretch time and increase U.S. exposure.
• The Strait of Hormuz is a major escalation risk. Even a small number of naval mines could disrupt global shipping and energy markets, and create severe hazards for U.S. Naval forces.
• Escalation becomes self-reinforcing. Each response creates new vulnerabilities, requiring additional forces and deeper involvement.
• This diverts attention from higher-priority threats. Prolonged conflict in the Middle East risks weakening U.S. posture in other regions.

This is how limited conflicts become prolonged wars.

Iran’s advantage is not in defeating the United States outright. It is in drawing the U.S. into a conflict that becomes harder to sustain politically, economically, and militarily over time.

The United States has seen this pattern before. Decades of war in the Middle East have cost trillions of dollars, strained military readiness, and diverted attention from other national priorities. After nearly 30 years of conflict, the burden of proof for another ground war should be high.

That burden has not been met.

A decision to deploy American ground forces into Iran is one of the most consequential choices a nation can make. It is not a tactical adjustment. It is a long-term commitment with serious consequences.

Before the United States takes another step toward a ground war in Iran, Congress must do its job. Because once a war begins to grow, history shows it is far harder to contain than it is to start.