Could the US stop a nuclear missile attack?

If a nuclear-tipped missile were hurtling toward the United States, would we be able to stop it? Maybe, if we were very lucky. But some experts warn that the United States’ missile defense system isn’t as reliable as people might think.Right now, a constellation of sensors and 36 interceptor missiles make up the ground-based midcourse defense system, or GMD. It’s intended to act as insurance against a small-scale nuclear attack from North Korea, or possibly Iran, according to t