The Russians, though, have softened their opposition and last month proposed an alternative missile-defense system to Washington.
The Taiwanese have cited the intelligence in arguing the need for development of a missile-defense system.
China is terrified of a missile-defense system that would make its own nuclear force impotent.
Mr. Clinton is scheduled to make a decision on a national missile-defense system in the summer.
The missile possesses advanced defense capabilities making it resistant to missile-defense systems.
The treaty restricts the testing and deployment of missile-defense systems.
At that point Congress should finance deployment of a robust missile-defense system.
But Russian officials note that part of the plan is for the "test bed" to become part of an operational missile-defense system.
But that would contribute nothing to a missile-defense system, he said, because the S-300 is designed to work against aircraft, not ballistic missiles.
But the allegations about the Patriots have drawn the most attention because the installations include state-of-the-art missile-defense systems.