He also derided the Anti-Ballistic Missile Treaty of 1972, which prohibited such defenses, as "ancient history."

We believe, however, that it is essential to do this in a way that does not destroy the Anti-Ballistic Missile Treaty.

The system he described requires eventually abandoning the 1972 Anti-Ballistic Missile Treaty.

Now several conservative senators are going one better and trying to pull out of the 1972 Anti-Ballistic Missile Treaty.

It is also far from clear whether the Soviets will agree to amend the Anti-Ballistic Missile Treaty and allow such a system.

Testing or deploying such weapons in space is prohibited by the 1972 Anti-Ballistic Missile Treaty, making their development particularly controversial.

The Senate proposal would mean building more than one site for the system, which could violate the 1972 Anti-Ballistic Missile Treaty.

Let us look as well at this intent to tear up the Anti-Ballistic Missile Treaty.

Such limits might grow out of the 1972 Anti-Ballistic Missile Treaty or a new superpower accord.

That move is under consideration even though many arms control experts insist that it would violate the 1972 Anti-Ballistic Missile Treaty.