After only six months on MSNBC, Greta Van Susteren is leaving the network. Van Susteren tweeted the news on Thursday afternoon. The anchor is leaving her 6p.m. show 'For The Record With Greta,' which will be filled by Ari Melber starting in July. "We have enjoyed having her on our air and we’re thankful to her and the show team," MSNBC president Phil Griffin said in a memo announcing Van Susteren's departure.