We have refused in order to pursue this fantasy of space-based antimissile weapons.

The Administration interpreted the treaty in a way that would permit space testing of big antimissile weapons like lasers.

The treaty forbids tests in space of antimissile weapons and their component parts.

The problem is so difficult, some critics say, that it threatens to defeat any foreseeable antimissile weapon.

Military officials reply that the antimissile weapons are intended only for defensive use and so should be seen as no different from the spy satellites.

Some critics say the risks of antimissile weapons outweigh any benefits.

Testing of the would-be antimissile weapon has not gone smoothly.

The last flight is listed as June 2004, right before the antimissile weapon is to begin operating in 2005.

Once the Soviets established antimissile weapons in space, the American nuclear forces became rather useless.

Defense scientists are exploring excimer lasers as potential antimissile weapons.