This is the most serious existing threat to world peace, and it is imperative that Pyongyang and Washington find some way to ease the escalating tension and reach a lasting, peaceful agreement.

Over more than 20 years, I have spent many hours in discussions with top North Korean officials and private citizens during visits to Pyongyang and to the countryside. I found Kim Il Sung (their "Great Leader"), Kim Yong Nam, president of the Presidium of the Supreme People's Assembly, and other leaders to be both completely rational and dedicated to the preservation of their regime.

What the officials have always demanded is direct talks with the United States, leading to a permanent peace treaty to replace the still-prevailing 1953 cease-fire that has failed to end the Korean conflict. They want an end to sanctions, a guarantee that there will be no military attack on a peaceful North Korea, and eventual normal relations between their country and the international community.