He came in as a macho Cold War president but after the reality of near nuclear war, John Kennedy became a changed man. He gave an important speech about peace in June 1963. Now the Cold War is back and Biden could learn much from this humbled Kennedy. Historian Martin Halpern talks about the power then and now of the military intelligence community over foreign policy. He says Biden’s great start in strengthening domestic programs can yield a better, more effective foreign policy as he builds real national security.