rights act of 1957 and he deserves a lot of credit johnson, for selma. and andrew young has said exactly what i m saying. gill robertson, douglas brinkley, thank you both. wolf blitzer is here with a preview of the situation room. today you re examining north korea s military threats and you have the state department s spokeswoman there. marie harf is joining us. a lot going on involving the aftermath of the sony pictures hacking. the u.s. responding sanctions, other steps as well. this is a very, very tense korean peninsula. 30,000 american troops right along the dmz. we re watching it closely. and we ll talk about what s going on in iraq. u.s. troops not combat troops, but there are u.s. troops. they could potentially be in combat given what isis is up to. we ll get into that with her as well.