Even though Kim Jong Un is probably playing for time, President Trump is right to meet with the North Korean dictator. But there are three major challenges that will affect this meeting.

The most obvious is the security concern. Even in the best scenario, a presidential visit to the truce village at Panmunjom — where the meeting will likely occur — will be fraught with security concerns for the Secret Service. While the U.S. military will provide emergency quick reaction capabilities in the event of a crisis, the Secret Service will want to avoid having Kim attend with a vast security apparatus that could turn on Trump, or to use the meeting as a bluff to invade the South (when it comes to the North Koreans, anything is possible).