the 1972 ABM (antiballistic missile) treaty. But Jastrow contends that Moscow has repeatedly violated the pact. Last summer, for example, U.S. spy satellites discovered a sophis- ticated radar complex located near the Soviets' Siberian ICBM fields. The only possible use for the radar is to direct antimissile rockets. Other evidence suggests that Moscow has tested such ABMs.
Jastrow envisions a three-tier defense of lasers and "mini-missiles.'
If each layer had a 10-percent "leakage rate,"...