thousands of people over the years. will the dictator kim jong-un come clean? i'm wolf blitzer. you're in "the situation room." our breaking news more shock waves in ferguson missouri. police chief thomas jackson has resigned. we are awaiting a news conference in ferguson. we plan to bring it to you live. the move comes just a day after the city manager stepped down and follows the departure of two police officers and the city's top court clerk. the mayor is hanging on for now but after last week's blistering justice department report on racial bias and abusive practices, the city government is going through a major upheaval right now. i'll speak live with benjamin crump, the attorney for the family of the slain teenager michael brown. our correspondents analysts and guests they're also standing by. we begin with two reports. cnn's sara sidner has been all over this story. let's go to our national correspondent, suzanne malveaux