As you listen to the debate unfold, remember these facts. The threat is different today than 10 or 20 years ago. The Scud is only one descendant of 'V' weapons. Today, there are literally thousands of them across the world. We live in their shadow and they will not go away.
Missile defense is rocket science.
We are on the threshold of solving the tough issues of defending against those ballistic missiles. We still have some stiff challenges ahead of us, but we are making remarkable progress.