U.S. Forces Deployed Around Iran

Since May 2019, the United States has added at least 14,000 more troops to the Middle East in response to tensions with Iran. As of March 2020, there were between 60,000 to 80,000 U.S. troops deployed in and around the Persian Gulf. This number includes forces positioned in Afghanistan, Iraq, and Gulf countries. In terms of military hardware, the Pentagon sent additional Patriot missile batteries, B-52 bombers, and F-35 fighter aircraft to Saudi Arabia, Qatar, and the United Arab Emirates in early 2019. 

The U.S. surged military capabilities to countries targeted by Iran and its proxies. The Pentagon sent one Terminal High Altitude Area Defense (THAAD) system after Iran attacked the Abqaiq oil facility in Saudi Arabia in September 2019. In January 2020, the U.S. deployed 3,500 troops to Kuwait after the assassination of Qods Force Commander Qassem Soleimani in anticipation of a retaliatory strike. By March 2020, the U.S. had deployed counter rocket, artillery and mortar systems to Iraq and was in the process of setting up Patriot missile batteries. 

But changes in the regional threat picture has also seen the U.S. redeploy or reduce its military footprint in certain theaters. U.S. forces began their withdrawal from Afghanistan in March 2020 as part of an agreement with the Taliban to move forward with intra-Afghan peace talks. The same month, American defense officials announced plans to redeploy troops from three Iraqi bases and removed nearly all of the 3,500 troops sent in January 2020.  

A B-52 at the Al Udeid Air Base in Qatar (2016 Air Force photo by Tech. Sgt. Nathan Lipscomb)

The following are best estimates of U.S. forces positioned in the region drawn from publicly available sources. U.S. Central Command (CENTCOM) did not confirm the “disposition or the capabilities of U.S. forces in the region” due to “concerns related to operational security and force protection.”

“We do not seek conflict, however, U.S. Central Command remains postured and prepared with forces that span a full range of capabilities in order to protect our partners, personnel and assets in the region,” said CENTCOM spokesman Army Maj. John Rigsbee. “USCENTCOM is also prepared to promote maritime stability, ensure safe passage, and enhance freedom of navigation throughout key waterways in our area of responsibility.”

USS Harry S Truman
In December 2019, the Harry S. Truman Carrier Strike Group (CSG) was operating in the U.S. 5th Fleet area of operations in support of naval operations to ensure maritime stability and security in the Central Region, connecting the Mediterranean and Pacific through the western Indian Ocean and three strategic choke points. (U.S. Navy photo by Mass Communication Specialist 2nd Class Michael H. Lehman/Released)


Breakdown of troops/assets by country:

Deployment map

Sources: Congressional Research Service reports on Afghanistan (September 2019); Bahrain (November 2019); Kuwait (December 2019); Oman (October 2019); Qatar (December 2019); Saudi Arabia (November 2019); UAE (November 2019); U.S.-Iran Conflict and Implications for U.S. Policy (January 2020); Washington Post (January 2020) 

Afghanistan: 14,000 troops

Bahrain: 7,000 troops, mostly Navy

Iraq: 6,000 troops

Kuwait: 13,000 troops

Oman: A few hundred, mostly Air Force

Qatar: 13,000 troops, B-52 bombers

Saudi Arabia: 3,000 troops, fighter aircraft, Patriot missile batteries, THAAD system

Syria: 800 troops

Turkey: 2,500 troops

UAE: 5,000 troops, UAVs, F-35 combat aircraft, two THAAD systems

Sources: CRS reports on Afghanistan (September 2019); Bahrain (August 2019); Kuwait (July 2019); Oman (July 2019); Qatar (June 2019); UAE (August 2019); U.S.-Iran Tensions (September 2019); Syria estimate by The New York Times (September 2019); Iraq estimate by the The Associated Press (August 2019)


Andrew Hanna, a research assistant at the U.S. Institute of Peace, contributed to this report.


Some of the information in this article was originally published on September 18, 2019.