and the world's first and only communist dynasty is celebrating the accession of its new heir apparent. kim jong un is expected to succeed his ailing father. until last week practically nobody had heard of him. who is he? gordon clang is an expert on north korea. he's in our new york bureau. good to see you. how much do we know about kim, really about kim jong un? nobody's really, from what i understand, been able to determine how old he is what his education has been? >> reporter: we think that he's 27, but he could be 28. we know that he's the youngest of kim jong-il's three acknowledged sons. he went to school in switzerland, as you pointed out, but he was there as the son of the driver of the north korean embassy, not as it's son of the leader of north korea. he idolizes michael jordan, just like his dad, but the one thing we truly do know is that he is