Shtora-1 is designed to jam incoming anti-tank missiles using a one-kilowatt infrared radiator.

It's true that a test ban would make it harder to design new missiles.

The Administration's move also alarmed arms control experts concerned that hostile governments could use American computers to design better missiles or even build nuclear weapons.

Those formulas are important to designing nuclear missiles and launching satellites that do not explode or break apart.

United States officials fear that the machines might be used by developing countries to design advanced nuclear weapons or ballistic missiles.

His father worked for the U.S. Department of Defense, designing missiles.

Muir was a former aerospace engineer who'd designed missiles for defense contractor Lockheed.

The transfer of technology for designing and producing missiles also would be limited.

That would be dangerous because knowledge of how the Patriot works could be used to design missiles that defeat it.

He designed missiles in the former Soviet Union.