As the United States focuses on national security threats emanating from China and Russia, it hasn’t lost sight of the threat posed by Iran and North Korea. At a congressional hearing on Thursday, Joint Chiefs Chairman Gen. Mark Milley said Iran threatens to destabilize the Middle East with its continuing support for terrorists and proxy forces. “Also, Iran is taking actions to improve its capabilities to produce a nuclear weapon, should it make the decision to do so, while continuing to build its missile forces,” Milley told the the House Appropriations Committee on Defense. …