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Being connected online may be a step in the door when a job appears, but having had a personal interaction gives you a leg up on all the other candidates that are new to the employer or merely online contacts of someone at the company. "By conducting an informational interview with a decision maker, you become a known entity. When something does become available within the organization, you are in a better position to be considered for it if you have already had that personal contact," says Cheryl Palmer, founder of Call to Career, a career coaching firm.

"This has emboldened North Korea to become more direct and forthright in its propaganda. Instead of saying, 'work with us, we can be friends,' they're saying outright, 'you work with us, or there's going to be problems. If you damage our pride, we're going to reduce Seoul to a sea of fire.'"

"I don't think the president did a political calculus to do this because if he did, he needs to go back to the calculator because it's a bad formula," Perkins said.