0 this is ""piers morgan live."" welcome to our viewers around the world. the muslim brotherhood says president morsy is under house arrest tonight. we'll have more with ivan watson live on the scene. first a day of crucial testimony in the zimmerman trial. the gun. >> that's all someone would need to do to fire a shot, if it was fully loaded? >> yes. >> the hoodie. >> do you know whose blood that was? >> i got a partial dna profile and that matched trayvon martin. >> the dna. >> this would be a buckle swab taken from george zimmerman. >> i'll ask my experts where does the case stand now with the prosecution winding down the case and the zimmerman trial in black and white. my exclusive with the man that defended o.j. simpson and his trial. he'll tell me whether he thinks zimmerman should take the stand. beginning with martin savidge outside the court live in sanford, florida. martin, another day, another gripping day of what could be vital testimony, the gun, the dna and so on. tell me about what happened today. >> yeah, a lot of forensics, piers. experts and evidence. much of the afternoon talking about dna, specifically whose dna was found where or not found. and the focus became upon the gun. the gun that george zimmerman used to shoot 17-year-old trayvon martin. zimmerman said at one point trayvon was reaching for his gun and my have got a hand on it. so what did the dna testing find? take a listen. >> the dna you got from the pistol grip of the defendant's gun is positive for gooblood, correct? >> yes. >> and the major matched the defendant, george zimmerman? >> yes. >> and you were able to exclude trayvon martin as having dna on the pistol grip, is that correct? >> yes, trayvon martin was excluded as being a possible contributor to this mixture on the grip. >> simply put, it means trayvon martin's dna was not found on that gun, and that could, of course, hurt the defense. piers? >> yeah, we sort of thought that was the case, but i guess what we saw today was incontinue veritable evidence under oath, likely to have been the case. where are we left then in terms of george zimmerman's claim that his life was at risk? >> yeah, well, you know, we should point out, of course, that the jury here, most of them came in with a limited knowledge of this case. we know it all. we discuss it all every night. they did not know what the dna test results were. for them this was truly new information. how they digest it and what they get from it remains to be seen. self-defense is still the maintaining issue here that the defense is putting out, and they believe they held up very well despite the very worst that the prosecution has delivered. the prosecution is not quite done, but they are pretty close, piers? >> they aren't quite done but may have their trump card up the sleeve because i saw one of the family attorneys, ben crump on anderson's show now saying it's very likely that trayvon's mother and brother may both give evidence on friday. that could be highly emotional, very difficult to cross examine i would think the mother of a young dead teenager. how effective could that be ending the prosecution's case, a weekend, 48 hours for the jury to think about it and come back? >> extremely powerful and that's probably the way it will play out. that's what most legal minds have been following here. think of it, the brother and on top of that you have trayvon martin's brother says yes, the voice you hear screaming for help is my son and that's just seconds before he dies. it would be so powerful for that jury to hear it. on top of that, there is nothing the defense can do. they are not about to cross examine a grieving mother, you just simply cannot. that's how the prosecution will end it and most likely let the jury think about it for saturday and sunday, over the weekend, piers. >> right, and the word i think martin is that this could all be over even as early as next week, early part of the week after. so this is coming to a dramatic end. martin savidge, thank you very much indeed. trayvon martin's parents have been sitting in the courtroom listening to testimony about the last moments of their son's lives, but will they take the stand? joining me is natalee. welcome back to you. >> thank you. >> i heard suggestion that it's likely sybrina fulton and trayvon's brother will take the stand. is that the case? >> there has to be a voice recognition of the screams. with the limited amount of data they have the best person to identify who is screaming on that tape is someone familiar with the voice. >> there has been a lot of criticism from the prosecution and legal experts and you've heard a lot of this, that you haven't collectively established enough incontinue veritable evidence to get a murder charge against george zimmerman. how do you feel as you approach the end of the prosecution? >> i disagree with that. i think they still have closing arguments where they will tie loose ends and have also rebuttaled if the defense puts on a case. so here, the trial isn't over and i think that we haven't seen them tie up loose ends, and i seen some loose ends i know will be tied up in closing. >> it's interesting talking to martin savidge there, we in the media and indeed you on the legal side have great knowledge of this case. it was probably the first time today that the jury actually heard everydidence from a foren expert there was no trayvon dna on that gun. how significant was that moment in court do you think today? >> i think it's very significant because we also heard evidence there was no george zimmerman dna on trayvon's hands or under his fingernails or on the cuffs of his sleeve and we seen a bloody picture of george zimmerman and no dna of trayvon except for a few spots on george's jacket. the jury will wonder why does trayvon's hands not have dna and why the gun doesn't have dna. >> there is another theray are prosecution case from the very start was destined to fail but you went for the murder charge because it was more likely that you could then get a lesser conviction of manslaughter. is there any merit to that oo argument? >> i think there is no merit. we heard the star witnesses would be good or jeantel. zimmerman gave five statements. he's the star witness of this case. listen to the non-emergency call he made where by his own admission he categorized trayvon in the group of these a-holes and f-ing punks and trayvon martin was running away from him and he got out of the call to follow. that's enough to show he was the aggressor here. >> natalee jackson, thank you for joining me. >> thank you. well maybe the biggest unanswered question in this case, will george zimmerman take the stand? my next guest has a prospective on that. robert, good to see you. >> nice to see you. >> what is the answer to that question, you think? >> let me give you the background. first, it starts with jury selection. let me ask you, piers. do you consider yourself a fair person? >> yeah. >> and as a fair person before you make a decision you like to hear both sides of the story. >> yeah. >> and i take it, you would like to hear my client, mr. zimmerman, tell his story? would that be true. >> that would be true. >> well, let me ask you something, while we're talking here, you're a professional but most people who would not be a professional, if i'm asking you questions on television, would you think you would be a little nervous? >> i mean, wouldn't be but i understand having interviewed many, many people that most people are quite nervous. >> okay. and as quite nervous, do you think people interpret somebody has being nervous as perhaps not being truthful? >> or being overly defensive. >> or being overly defensive. >> and for that reason, there is nothing to gain by putting zimmerman on the stand given we have five different effective statements from him? >> so, i would first make sure that every one of the jurors understood that the decision to take the stand is going to be my decision, and the reasons why i wouldn't have somebody take the stand, just being nervous, perhaps that alone would make you think maybe he's not being truthful. >> yeah. >> maybe he's not being forthright. on the other hand, we established the fact that people want to hear both sides of the story. so then i would talk to the jurors and say in a simple case you get to do that. that's the way fair justice happens but only money is at stake in a criminal case, the burden of proof is on the prosecution and it never ever changes. so we're not required to do anything. >> is there anything to be gained, robert, by zimmerman taking the stand given the amount of material from his own mouth that we've already heard? >> yes. >> what is that? >> the jury can see him, look him in the eye and that's the best way to make a determination if you're believing that person was actually in fear for his life. >> how much could the defense's decision on this process and indeed, george zimmerman's rest potentially on trayvon's family taking the stand? because that could be a very powerful moment. it could be the moment when the balance, if you'd like, in this trial switches back to the prosecution case, could that be a tipping point for them to say we've got to have george up there? >> you know, it is so hard to evaluate. obviously, when the family members testify and the defense then gets a chance to cross examine, what i would probably do is say, other than offering my sympathies, i have no further questions of you. >> right, because you can't win a cross-examination of a grieving mother -- >> or of any relative of a victim. that just is not going to work. so now the defense is really faced with a dilemmas. zimmerman has, in fact, testified. he's testified on the video. he's testified on the audio. he's been interviewed by the police who gave their version of his testimony. so the jury at least knows his story. it would be icing on the cake if they heard it from him, but there is tremendous risk, and that is anxiety, nervousness, inconsistencies, you say something a little bit different than you said it before, and the other thing is that chair is the most difficult chair in the world to sit in. i don't care how good a witness you are, you could be a cop that has testified -- >> i gave evidence once in a court case in britain. it was terrifying. five hours on the stand with a top lawyer coming at me like a 10-ton truck and even though i had a lot of experience in courtrooms as a reporter, i found it a terrifying experience. >> and that's true with everybody, and you're a professional, and most people get up there and they are scarred. >> what is your view of how the prosecution has done so far? a lot of lawyers i've been hearing and mark geragos said they have been so bad they want to throw the murder charge so they can't get it and get manslaughter. >> here is what happens in these cases, the prosecution generally over charges in a case that's a high-profile case, and the other thing is they over try the case. they call many witnesses that are totally unnecessary. they call a witness to tell you that if you hit your head on the ground, you may bleed. that insults the jury. >> have they ever played the hand, have they overcharged? >> i think they have overcharged. >> really should have been a manslaughter charge. >> absolutely. >> would have had more chance of winning. >> i haven't heard any evidence whatsoever that there is malice on the part of zimmerman. >> what about what he says these punks, these a-holes, he's identifying martin who he doesn't know at all as an a-hole punk, isn't that malice? >> malice is a legal term. it's not a generic term and legal malice is you have ill will towards someone. >> isn't that ill will? >> it could be interpreted as that. again, you have the reasonable doubt standard that you have to get over. could it be? yes. >> without -- see here is my point. without george zimmerman looking at trayvon martin and thinking a-hole, f-ing punk and so on and the police telling him not to follow him, he's a busy body neighborhood watch, he's got his gun, he wanted to be a cop. he didn't quite make it. this is a moment and he's had quite of few of them. he didn't need to do any of that stuff but in his head he's thinking a-hole punk. i keep come pg back to that. racial profiling or just profiling this is a bad person, he's still coming at him with malicious intent, isn't he? >> i don't know but that's going to be the question. >> is that a key question? >> that's a key question and that's what the lawyers are going to be arguing in their closing argument and that's what the jury will sit on ex and decide. they will decide two things, they will decide whether as a matter of law there was malice and whether or not they believe zimmerman's testimony that it was self-defense. >> do you believe him? >> i haven't heard him testify directly -- >> from what you've seen in the statements and interviews? >> yes. >> we're in los angeles. a lot of people fearing that if there is no conviction at all here, there could be race riots and so on. do you feel it's as a motive as say the o.j. simpson case? >> i don't want to compare anything to the simpson case and i don't really talk about the simpson case. this is a highly strung divided case. it's divided among african americans and caucasians, unfortunately, and i just hope that people believe in the jury system, that they don't judge people on moral guilt, they judge people on legal guilt and if they do, and they believe in our system of justice, then hopefully we'll have a peaceful ending of this. >> final question robert and briefly, the stand your ground law which actually hasn't been used in the end in this case but could have been used at one stage, does that have anyplace really in a modern civilized society? is it just not an excuse for every gang banger thug in america to say hey, i was just acting in self-defense? >> we're going to see the opposite side of that in the oscar pistorius case where in south africa you cannot use deadly force unless deadly force is being used upon you. >> right. >> so i agree with you. >> robert shipero thank you. >> thank you. the state is closing in at the end of the case. what does the jury thing? egypt's president is out but is it a coup? we'll go live to cairo.