The United States said Friday it had approved more than $600 million in sales of air defense missiles to South Korea and Japan as tensions return with North Korea. The State Department said it had approved 94 SM-2 missiles used by ships against air threats, along with 12 guidance systems for a total cost of $313.9 million. It separately gave the green light to sell 160 anti-air AMRAAM missiles and related guidance equipment to Japan for $317 million.
