Nothing was in the cards. You can not possibly know how things would have turned out with a continuation of detante. Slashing of the military budget (say, under a 2nd Carter administration), and retreating from confrontation with Soviet-led international communism would have significantly reduced internal political and economic pressures within the Soviet Union to an extent that could have made their system sustainable. And the cost would have been how many more years of slavery for the peoples of Eastern Europe, the Baltics, Ukraine, and the Central Asian countries?