Sen. Mark Warner Claims Removing Iran’s Enriched Uranium Would Require ‘10,000 Troops on the Ground’

Sen. Mark Warner (D-VA), the vice chairman of the Senate Intelligence Committee, stated Sunday that physically removing Iran’s enriched uranium stockpile would require approximately 10,000 American ground troops — a stark assessment that underscores the immense complexity of any military option to neutralize Tehran’s nuclear capabilities. The remarks came during a televised interview as diplomatic tensions between the United States and Iran continue to escalate amid ongoing nuclear negotiations.

Warner’s assessment carries considerable weight given his position as the ranking member — and former chairman — of the Senate Select Committee on Intelligence, which provides him access to classified briefings on Iran’s nuclear capabilities and the military options available to the United States. His 10,000-troop figure appears designed to illustrate that airstrikes alone, while capable of damaging Iran’s nuclear infrastructure, would be insufficient to guarantee the physical removal of enriched uranium stockpiles. Iran’s nuclear program is dispersed across dozens of facilities, many of which are hardened against aerial bombardment. The Fordow Fuel Enrichment Plant, for instance, is buried under approximately 80 meters of rock and earth near Qom, making it extremely difficult to destroy from the air even with the most advanced bunker-busting munitions in the U.S. arsenal, such as the GBU-57 Massive Ordnance Penetrator. Other key sites include the Natanz enrichment facility, the Isfahan uranium conversion plant, and the Arak heavy-water reactor complex. The International Atomic Energy Agency (IAEA) has reported that as of early 2025, Iran possesses enough enriched uranium — if further enriched to weapons grade — to theoretically produce multiple nuclear warheads, a dramatic expansion from the limited stockpile permitted under the 2015 Joint Comprehensive Plan of Action (JCPOA).

The senator’s remarks also implicitly reference the enormous logistical and geopolitical challenges of a ground operation in Iran. With a population of approximately 88 million and a landmass of 1.65 million square kilometers — roughly three and a half times the size of Iraq — Iran presents a vastly different military challenge than any U.S. ground engagement in recent decades. Military analysts have long warned that even a limited ground incursion into Iran could trigger a regional conflagration, drawing in proxy forces in Lebanon, Syria, Iraq, and Yemen. Warner’s framing also serves as a counterpoint to those who advocate for a purely military solution to the Iranian nuclear question, suggesting that the intelligence community’s assessment of what would be required goes well beyond targeted strikes. His statement aligns with longstanding Pentagon assessments that have cautioned against assumptions that the Iranian nuclear problem can be solved quickly or cleanly through force alone. The 2003 invasion of Iraq, which ultimately required over 130,000 troops and lasted years longer than initially projected, remains a powerful cautionary analogy in these discussions.

Warner’s public estimate arrives at a particularly sensitive moment. The Trump administration has signaled openness to both diplomatic engagement and intensified pressure on Tehran, while Israel has repeatedly stated that it views a nuclear-armed Iran as an existential threat and has not ruled out unilateral military action. Recent reports of indirect U.S.-Iran diplomatic contacts suggest that some form of negotiated settlement remains possible, though the parameters of any such deal are deeply contested in Washington. Congressional figures on both sides of the aisle are closely watching whether the administration pursues a comprehensive agreement that addresses enrichment, missile development, and regional proxies, or a narrower arrangement focused solely on nuclear constraints. Warner’s comments appear calibrated to inject a dose of realism into the debate, reminding policymakers and the public that the military option — while always on the table — carries costs and complexities that extend far beyond precision-guided munitions.

Looking ahead, the trajectory of U.S.-Iran relations will likely hinge on several converging factors: the pace of Iran’s enrichment activities, the willingness of both sides to return to negotiations, and the posture of Israel, which has demonstrated its capacity and willingness to strike Iranian nuclear assets. Warner’s 10,000-troop figure, whether precisely calculated or illustrative, has injected a concrete data point into what is often an abstract policy debate — one that could shape congressional deliberations over military authorization, defense spending, and diplomatic strategy in the months ahead.