Donald Trump’s push for an “Iron Dome for America” signals a strategic shift in U.S. missile defense policy that could have major implications for North Korea’s evolving missile program. 

The U.S. president signed an executive order Monday directing the Pentagon to develop a comprehensive missile defense system. While the order does not name a specific country, it calls for the accelerated development of space-based tracking sensors and interceptors to counter ballistic, hypersonic and cruise missiles — capabilities that North Korea, China and Russia are all actively advancing.