Hitting a bullet with a bullet

Sinopse

The history of BMD efforts appears to counter the concern of those who fear the "technological imperative", that is, if it can be built, it will be built. The 1972 ABM Treaty limited a line of development. SDI was stopped, or certainly redirected, because of cost and politics. A number of BMD systems have been developed and tested, but a full-scale system has not yet been deployed for a variety of technical, economic, and political reasons.