WASHINGTON — Defense Secretary Pete Hegseth on Friday approved a second major reinforcement of U.S. forces in the Middle East in under a week, authorizing the deployment of the USS Boxer Amphibious Ready Group and the California-based 11th Marine Expeditionary Unit to U.S. Central Command, according to three U.S. officials cited by the Wall Street Journal. The deployment adds approximately 2,200 to 2,500 Marines, three additional warships, and associated naval aviation assets to a region where the United States now has roughly 50,000 service members engaged in or supporting Operation Epic Fury.
The Wall Street Journal report, published Friday morning, immediately triggered a risk-off reaction across financial markets. The S&P 500 accelerated its decline on the news, the dollar strengthened, Treasury yields jumped, and oil prices resumed their advance. The deployment signals that the Trump administration's confidence in a rapid resolution to the Iran conflict is eroding, even as President Trump stated Thursday that he has no plans to deploy American ground troops into Iran itself.
The new deployment follows the earlier dispatch of the Japan-based USS Tripoli and 31st MEU, which is already en route to the region. CENTCOM has struck approximately 6,000 targets inside Iran since the war began and has eliminated more than 60 Iranian ships and over 30 minelayers, the command said Thursday. Nevertheless, Iran's new leadership under Mojtaba Khamenei has vowed to maintain its blockade of the Strait of Hormuz, the narrow waterway through which approximately 20% of the world's crude oil and a significant share of global LNG exports transit.
The economic consequences of the sustained blockade are severe and broadening. Oil prices have surged 65% year-to-date, with Brent crude trading near $108 to $110 per barrel and briefly touching $119 earlier in the week. The disruption has cost the U.S. government an estimated $11.3 billion in just the first six days of combat operations. Treasury Secretary Scott Bessent said this week that U.S. Navy escorts for commercial ships in the Strait could begin soon, but officials noted that escorting operations would first require suppressing Iran's land-based anti-ship missile capabilities.
From an investment standpoint, the additional deployment has clearest positive implications for defense contractors. Northrop Grumman, Raytheon parent RTX, Lockheed Martin, General Dynamics, and L3Harris have all seen elevated demand for munitions, guidance systems, and naval platforms since the conflict began. Oil and gas producers benefit directly from elevated crude prices. Conversely, airline stocks, consumer discretionary companies, and rate-sensitive growth stocks face the most sustained pressure from a prolonged conflict.
Market strategists are watching for two specific catalysts: any credible ceasefire signal or opening of the Strait — which would trigger a sharp rotation out of energy into beaten-down growth stocks — and any further escalation of the conflict into Gulf Cooperation Council territory, which could send oil above $120 and trigger a more severe economic shock. Until one of those scenarios materializes, investors should expect elevated volatility and a defensive market posture to persist.