invited to the white house. would the president agree tow host such talks when russia is being blamed for a nerve agent attack? and charm offensive. kim jong-un plays host tow a south korean pop group. is he trying to soften his image just before a proposed but still unscheduled summit with president trump? i'm wolf blitzer. you're in "the situation room." breaking news, president trump's attacks on amazon and a looming trade war with china helped send the markets into a trade spin. blaming democrats for the death of dreamers program which he moved to cancel. and on the eve of the first sentencing in the russia investigation, the special counsel robert mueller tries to keep his team secrets under wraps.