Ankara’s 2017 decision to purchase $2.5 billion worth of S-400 air defence systems from Moscow caused serious complications in its relationship with its US allies, with Washington booting Turkey out of the F-35 programme and sanctioning a key defence sector agency.

Iranian President Hassan Rouhani said Wednesday that his country would abide by the 2015 nuclear deal if the United States and the five other signatories abided by their responsibilities in the accord as well.

President Joe Biden announced the formation of a DOD China Task Force to provide a baseline assessment of department policies, programs and processes in regard to the challenge China poses.