From the beginning of the Trump administration, the U.S. military presence in Gulf Cooperation Council (GCC) countries has rapidly evolved. Specifically, the number of U.S. Air Force soldiers stationed in Qatar, United Arab Emirates, and Kuwait has been significantly reduced. This may be a result of President Trump’s preference to minimize the level of U.S. troops deployed in the region. Conversely, the United States has maintained its naval presence in the gulf, including an aircraft carrier strike group and naval troops in Bahrain. In the same period, Iran has remarkably expanded its military capabilities after developing sophisticated new missile systems, drones, and submarines. Combined with recent hostile events in the gulf, this situation has heightened concerns about gulf security, in particular, to ensure the safe passage of crude oil destined for all parts of the world. Current tension may lead to an escalated presence of U.S. forces in the region.