to protect against flare-ups caused by the sun. herpecin l. it is tehe end of the first full day of competition at the winter olympic games now officially underway in south korea. 15 medal s has have been awarde already in skiing, skating and jumping. but on the sidelines of the games that are already historic, something important such as diplomatic work is being done to impact the world long after the games are over. our cnn international correspondent ivan watson is joining us. now, ivan, talk about the south korean president receiving an invitation from the president of north korea to come for a visit. how big is that moment? it is big. and we may look back to say that the road of pyeongchang went through the olympics here in pyeongchang if the south korean president does agree and go through with the invitation, but, yeah, after having the sister of north korea s leader