
A pair of senators are urging the State Department to impose sanctions on Turkey for its purchase of the Russian-made S-400 air defense system, raising concerns the capability is being used to detect U.S.-made F-16 fighter aircraft. Sens. Chris Van Hollen (D-Md.) and James Lankford (R-Okla.) sent a letter Wednesday to Secretary of State Mike Pompeo pressing him to provide information on Turkey’s use of the S-400. Ankara was removed from the F-35 program over its purchase of the system.…