Should Trump talk with North Korea’s Kim Jong-un?

It has been a strange couple of weeks for isolated North Korea. The so-called “Hermit Kingdom” sent a high-ranking delegation to the Winter Olympics in Pyeongchang and even agreed to walk in the opening ceremony with their neighbors to the south under a unified flag and field a joint women’s ice hockey team.
Then came a thank-you card in which Kim thanked the south for “specially prioritizing” the north’s attendance at the games and a photo that observers desc