Complex sentence: Stoltenberg's drug addiction became known to the Norwegian public in October 2001, one week after her brother had resigned from his first cabinet, when she spoke about it in current affairs television program "Rikets Tilstand" which broke previous records for number of viewers.
Split into simpler sentences: Stoltenberg's drug addiction became known to the Norwegian public in October 2001, one week after her brother had resigned from his first cabinet. The revelation came when she spoke about it in the current affairs television program, "Rikets Tilstand", which broke previous records for number of viewers.