. >> well, today's senate minority leader democratic mike schumer from lev parps a strengthens democrat'sush for witnesses, in his interview with rachel maddow, he said former national security adviser john bolton would be a key witness. >> zell ski was supposed to make another announcement and that didn't happen. that's when bolton, secretary bolton went over there and i think he has a lot to say. i know mr. bolton was definitely involved in the loop because of the firing of may yovanovitch also his interactions with rudy guiliani, they started butting heads. >> you believe he knows what the administration was pressuring ukraine to do? >> bolton, 100%. >> what would it be like to have him testifying to you guys in the senate, you jurors? he seems real, this guy. >> no, he does, i got to tell you, chris, i watched that whole interview with rachel last night. my jaw just drochltd i went, oh my god -- my just a just dropped. i went, oh my god, after seeing that, it would be a gross dereliction of duty to say we can't call witnesses. it's not unusual at trial to have new information and new