North and South Korea reached a historic peace deal last week, and as the leaders from the two nations met in person for the first time and agreed to pursue an end to the Korean War, it signaled an incredible breakthrough in diplomacy and sent the stocks of defense contractors in the United States crashing.

When North Korea's Kim Jong-un shook hands with South Korea's Moon Jae-in for the first time on Friday, they put thousands of people both at home and around the world at ease, as they agreed to a peace deal that has the power to break the tension that has been between the two countries for decades.

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