From the Document: "The January 2, 2020, U.S. drone strike against Iranian Major General Qasem Soleimani, the subsequent Iranian counter-strike on bases hosting U.S. personnel in Iraq, and recent deployments of U.S. military forces to the Middle East have prompted widespread concerns about whether the United States is preparing to engage in another major military campaign in the region. Yet at present, the flow of additional forces into the U.S. Central Command (CENTCOM) area of responsibility (AOR) suggests that the Department of Defense (DOD) is posturing itself in the region defensively, with the ability to respond to aggression, if necessary. The design of this posture may be altered should there be changes to security or political conditions on the ground, or political objectives for the region."
CRS In Focus, IF11403
Congressional Research Service: https://crsreports.congress.gov/