Complex sentence: Charen has spoken out in disagreement with former "Capital Gang" co-host Robert Novak regarding her tenure on the show and the reason for her departure, which caused a heated editorial exchange between her and Novak.
Split into simpler sentences: Charen has spoken out in disagreement with former "Capital Gang" co-host Robert Novak regarding her tenure on the show and the reason for her departure. This caused a heated editorial exchange between her and Novak.