John F. Kennedy won the presidency by claiming that the Republican Party had allowed the U.S. to fall behind the Soviets into a missile gap. Upon entering office Kennedy cited General Maxwell Taylor's book "The Uncertain Trumpet" to Congress for its conclusion that massive retaliation left the U.S. with only two choices: defeat on the ground or the resort to the use of nuclear weapons. Technology had improved since massive retaliation was adopted. Improvements in communication and transportation meant U.S. forces could be deployed more effectively, quickly, and flexibly than before. Advisers persuaded Kennedy that having multiple options would allow the president to apply the appropriate amount of force at the right place without risking escalation or losing alternatives. This would improve credibility for deterrence as the U.S. would now have low-intensity options and therefore would be more likely to use them, rather than massive retaliation's all-or-nothing options.