WASHINGTON—The U.S. is eradicating Patriot antimissile systems from Saudi Arabia and is contemplating reductions to other armed forces capabilities—marking the finish, for now, of a large-scale armed forces buildup to counter Iran, in accordance to U.S. officers.

The U.S. is eradicating two Patriot missile batteries from Saudi Arabia and two other individuals from the Middle East, along with dozens of armed forces personnel who have been deployed to the area adhering to a sequence of attacks on the Saudi oil services previous calendar year, in accordance to a number of U.S. officers….