What I'm inferring from your question is whether or not the system is effective against North Korea.
On March 9th, 2015. See this statement in context.
On March 9th, 2015. See this statement in context.
Deputy Commander, North American Aerospace Defense Command (NORAD), Department of National Defence
What I'm inferring from your question is whether or not the system is effective against North Korea.
See context to find out what was said next.