antitrust trial between at&t and the department of justice is set to resume p. what can we expected to as both sides make the case about the proposed merger deal with time warner which of course owns cnn. let's bring in cnn politics media and business reporter hadask gold and brian stelter. what are we looking for? >> today we'll hear from more witnesses including our boss john martin and he's actually one of the government witnesses which means he'll probably be what's called a hostile direct which means it is not going to be the typical witness from a certain side where there are a little bit more friendlier and on the same terms. that's going to be an interesting witness today. we're also expecting in the near future other witnesses such as representatives from youtube as well as from sling tv, the new over-the-top services that people are using. they'll try to make the case that this merger will hurt them whereas at&t will try to make