America's forthcoming "Prompt Global Strike" non-nuclear hypersonic missiles will be able to hit almost any spot on earth in less than an hour-provided excellent satellite data is available.

But Pyongyang has said any attempt to shoot down its "for peaceful purpose" satellite would be an act of war and has warned it would quit the stalled six-party aid-for-nuclear-disarmament talks.

C3I technology is primarily affected by high-altitude nuclear effects that could interrupt satellite-to-satellite communications, satellite-to-aircraft links, or satellite-to-ground links.