"The tremors in the Soviet world continue. The hard earth there has not yet settled. Perhaps what is happening will change our world forever and perhaps not. A prudent skepticism is in order, and so is hope. But, either way, we're in an unprecedented position to change the nature of our relationship—not by pre-emptive concession but by keeping our strength, not by yielding up defense systems with nothing won in return but by hard, cool engagement in the tug and pull of diplomacy."