So the Soviets may well have believed we were seeking Castro's overthrow plus a first-strike capability.

Of particular significance was the relationship between explosive power of reliable, tested warheads and first-strike capability.

Second, that no side had 'first-strike capability', that is, the ability to knock out the other side completely in a surprise attack.

Our objective, rather, should be to insure that the Soviet Union does not have a first-strike capability.

And the Pentagon will continue its work on a disarming and unanswerable first-strike capability.

"Captain," he said, "wouldn't the creation of an advanced propulsion system also provide Starfleet with a first-strike capability?"

What they were doing, or trying to do, was take away their enemy's first-strike capability.

Their first-strike capability was awesome, but they did not have the storage capacity to maintain a fight for long.

We have to find out more about that first-strike capability and then see what their staying power is like.