We begin this hour with breaking news. 3 00 a. M. Here on the u. S. East coast. This story out of zimbabwe. It appears president Robert Mugabes resignation could become official at any time now. A source with direct knowledge of the negotiations says a Resignation Letter has been drafted. Mr. Mugabe has agreed to the terms and the letter must now be sent to the speaker of parliament. Remember, all of this comes after the president s own party threatened to impeach him if he didnt step down in the coming hours. Hes been under house arrest since an apparent military coup that took place last week. Cnn is live in harare, zimbabwe. David mckenzie on the story in that nations capital. And david, what more are you learning about the nature of this letter and what might be part of the agreement . Reporter well, this source telling us, george, that there is an agreement of some kind between the military and Robert Mugabe what is been under house detention for several days since this apparent coup took place. Now, its our understanding that that agreement would include some kind of immunity for Robert Mugabe, his wife and first lady, grace mugabe, and that they can keep some assets in the terms of that agreement. The sources saying that a Resignation Letter has been drafted but until of course that resignation is signed, sealed, and sent to parliament we wont know. And certainly based on the expectations of many people here in zimbabwe everyone i would have to say probably anticipated that Robert Mugabe would get on Live Television in that address on state media and do the resignation to the nation. What he did do in that address was to talk broadly about the constitutionality of what has happened over the last few days which does play into the hands of the military, who have several times said this is not a coup, despite the fact that they are controlling the streets of the capital and across the country. George . Lets talk a bit more about that, david, because again, talking up the sense that this is a peaceful transition, talking down the concern that its a military coup. How important is that . Reporter its very important for those military leaders who orchestrated this. And we now from our reporting a few days ago that this apparent coup was in the works for some time according to a senior opposition source. That the discussions to remove mugabe from power as an option were on the table for even some years. Now, what we have seen is what appears to be a very calculated series of steps by the military here in zimbabwe. Its not a coup that you would expect. Right . Normally you would expect the military to come charging in, taking over the state broadcaster and deposing the president. Youve had these bizarre moments of the military shaking hands with the president in these negotiations. Those pictures released by state media. A kind of jovial atmosphere put out in those propaganda releases. So what they are trying to say and put out into the public, that its all maybe extraordinary but a normal process of a transfer of power. When in fact its anything but. George . The reporting of cnns David Mckenzie, again, according to a source Robert Mugabe agrees to terms of resignation. Well of course stay in touch with you, david, as you continue to work your sources. Lets get some context now and perspective with knox chitoya. Else an associate fellow of the Africa Program at chatham house. Its good to have you with us, knox, this hour. Mr. Mugabe has been under pressure like this before, right . 37 years in power. People have tried to push him out of power before. Hes managed to hang on. According to davids reporting, though, a Resignation Letter has been drafted. Heres the question. Until this is official, is there any chance that mr. Mugabe could somehow find his way out of this . Its very unlikely. I mean, the difference now is that his key former allies are the ones saying he must go and thats the military and the party. In previous years when they wanted him to go he had their support. This time its very difficult to see that he can resist change. The military really is fastforwarding history right now. Lets talk about the man that would be set to replace mr. Mugabe, again nicknamed the crocodile here. Mr. Mnangagwa, Emmerson Mnangagwa. Would life be different for people in zimbabwe under his leadership or would this be a continuation of more of the same . It would be sort of the same but different. Right now people in zimbabwe, the big thing is the economy. Most people if incoming president mnangagwa would put together which one hopes would be inclusive and tackle the economy, i think people would be really up for that. That is the key thing. If it can handle the economy, people are willing to give him that chance. Lets talk more about mr. Mnangagwa, because for many of our viewers who are learning about this story, nicknamed the crocodile, knox tell us about that. Mnangagwa is a survivor. In political terms he was there since the 1960s. He was arrested during the ian smith days. He survived a lot. And as weve seen, he was sacked by mugabe just a few weeks ago. Hes not someone who gives in easily, and hes seen as someone whos very smart, very shrewd, a survivor, and people have written him off before and hes come back. As were seeing now. Thats partly why people call him the crocodile. Hes someone who he knows how to play the game. But again, for people in that nation who before these recent days would not be able to protest in the streets, people who would know that there would be a fierce crackdown of anyone speaking against president mugabe. What would mr. Mnangagwa mean for people with regards to change . Would this be more of the same with regards to what people are looking for with new government leadership . I was in zimbabwe just a few days ago. People want the economy sorted. And i think people are willing to give him that chance in terms of setting up a government. For now what people want is a government that can tackle problems. There are fault lines socially and politically around issues of governance, and that may come up. We may be having elections next year. So that may become an issue. But right now what people want is a government that can handle the economy. Thats the main thing. And just to take these images full screen for a moment because i want to show our viewers these rallies that came together just days ago in zimbabwe in the capital of harare. Again, many generations there, people who only knew mr. Mugabe as president , people taking on, demanding the change. And we are waiting to see whether this letter, whether the terms of resignation becomes official, and of course well keep in touch with you for perspective on this major story. Thanks for taking time with us today. Thank you. Another major story were following here in the United States, Charles Manson, one of the most notorious criminals in u. S. History, has died. California prison Officials Say he died of Natural Causes sunday. He was 83 years old. Manson was serving nine consecutive life sentences for ordering a wave of killings in 1969. Stephanie elam looks back at his life. One, two, three what are we fighting for reporter california 1967. The summer of love at its peak. Charles manson arrived on the scene with folk music and a flock of ardent young followers but with much darker ambitions. Manson may be the most famous notorious mass murderer ever. Reporter the summer of 69 was marred by gruesome murders that shook the nation. Five People Killed at the home of Hollywood Star sharon tate and another couple murdered the following night. These murders used to be called the tate murders, and then some people called them the tate la bianca murders. Then manson appears on the scene, and hes so charismatic and interesting that he upstages the victims and from that point on it was called the manson murders. Reporter manson was the mastermind behind the brutal killings. The leader of the clan that carried out the unthinkable. He was convicted of conspiracy and murder in 1971 and infamously went down in history. I do a lot of things in the world you that you guys dont see. Reporter manson was born in cincinnati in 1934 to a single teenage mother. She got out of my life early. I spent the best part of my life in boys schools, prisons, and reform schools because i had nobody. Reporter after marrying twice and spending half his life in prison, 32yearold manson made his way to berkeley in 1967. He established himself as a guru in the summer of love and was quickly sharing a home with 18 women. You get these kids, these children coming in to haightashbury and here is Charlie Manson saying how much he loves them and he wants to take care of them. He took full advantage. Reporter as the manson family formed and migrated south, its leader established himself on the fringe of the l. A. Music scene. He recorded albums with the family like the aptly named lie, the love and terror cult. Mansons passion for music translated into an obsession with the beatles 1968 song helterskelter. To manson it meant that the beatles wanted to have a worldwide revolution, blacks against whites. Reporter aiming to launch the fabricated war, manson directed his disillusioned clan to kill. On august 9th, 1969, four manson followers invaded the Hollywood Hills home of actress sharon tate, where they massacred five people. The 26yearold starlet was 8 1 2 months pregnant. The next night the clan brutally murdered los angeles couple leno and rosemary la bianca. At both homes they left behind shocking murder scenes. When those words helterskelter were found printed in blood at the murder scene, that was tantamount to mansons fingerprints being found at the murder scene. Reporter after evidence in the cases mounted and a highprofile trial, manson and four followers were convicted of nine murders and sentenced to death in 1971. Which was downgraded to life in prison when california banned the death penalty. The notorious killer appealed for parole 12 times. If im not paroled okay. And i dont get a chance to get back up on top of this dream, youre going to win. Helterskelter. Reporter while the convicted killer became somewhat of a pop culture icon, the family members of his victims never forgot his true impact. He needs to look into our eyes, victims eyes, and see the pain that hes caused. Stephanie elam reporting on the death of Charles Manson, dead at 83 years old. The families of 44 Argentine Navy members are anxiously waiting for new clues about where their relatives might be. The crews missing submarine was scheduled to arrive at its home port on sunday. Instead relatives now have left messages, some of which read come on marines, we are waiting for you. Its unclear if signals detected recently came from the crew. Their sub disappeared wednesday off argentinas southern Atlantic Coast. Translator i want you to know that we have tripled the search effort both on the surface and underwater with ten airplanes. We have 11 ships from the Argentine Navy, from municipalities, and from countries that have collaborated with Research Ships such as uruguay, chile, brazil, peru, the United States and england. These ships are following the submarines planned route and are sweeping the whole area. And we also have navy ships sweeping from the north to south and from the south to north. Now, its still unclear exactly why the submarine lost communication. We asked a former u. S. Navy diver, William Craig reed, about what could have gone wrong here. Listen. Well, we really dont know why or how in this particular case a submarine has gone missing. But there are all kinds of things that of course can happen on a submarine. Weve seen this in many cases over the years. It could be some sort of catastrophic failure. It could be something minor in fact that has caused them to either be hung up somewhere or there on the bottom. We just dont know what the catastrophe might be at this point. We do know they have an emergency satellite Communication System that is a buoy, if you will, that will pop up to the top and they can send signals from this. They believe that might be the case, although unfortunately it has not panned out. They have p been able to triangulate these signals. So theres no way to confirm that they came from the submarine. They believe they may have. But weve not yet heard that theyve been able to use them to locate the downed submarine. William craig reed there, certainly an expert, telling us what might have happened. And now our meteorologist pedram javaheri, our expert, to tell us about the weather conditions there. And pedram, a treacherous part of the world when it comes to weather and certainly hampering the search. It is. Absolutely. When you get this far south into the Southern Hemisphere youre talking about an area well known for the westerly winds. Of course the winds of 60, 70, 80 Kilometers Per Hour or about 45 miles per hour, thats almost a daily occurrence. And unfortunately we have a storm system with this to boot. You put it together theres the area of last known point of communication. Unless you get from the 40s to 50 degree latitude, down to the 60 degree latitude nall mark, these are regions very common for excessive winds year round. And you look at the models, kind of depicts exactly what were looking at here. Anything seen in the red there, thats 50, 6 0rks and 70 kilometers or stronger. And thats precisely what is in store for the next couple of days. As you go from tuesday into wednesday we get a brief break there in the wind speeds, and then thursday into friday another storm pushes through. So that is a major player in all of this because it might seem counterintuitive when you think about a submarine mission where of course everything is down beneath the surface, that weather wouldnt play as much of a role. But the visual cues you would need to be able to see whats going on here, to be able to potentially see the submarine, because by navy protocol a submarine should come to the surface right when communication is lost. So if there is a device that was sent to the service or the submarine itself is up near the surface, we know the wave heights there upwards of eight meters, which is roughly two stories high. Sow put this together with the gusty winds, its really not a scenario you that want people out there because of course you would put additional lives at risk being out across this particular region. Again, anytime you see the yellows, they come back as we go toward thursday. Thats ninemeter wave heights getting up across this region. So pushing into the 20s, 20foot range. Again there is a storm system in the area. A secondary one expected to push through as well. Once you go beneath the surface, george, and you look how far down this particular region is, you see how challenging of a setup this is. Its about 2,200 meters down to the shelf at the surface here, which goes down about 7,000 feet. And the tallest building in the world would be able to be stacked some 3 1 2 times over at this depth, george. Wow. Pedram, we just certainly hope that the very best that these crews are able to get some information about the location of this sub. Well stay in touch with you. Thank you. Yeah. Cnn newsroom pushes on. Ahead, the next episode of president ial twitter spats is playing out on social media. Why President Donald Trump says he should have left three ucla basketball players in detention in china. Newsroom right back after the break. Of ugmonk. Before shipstation it was crazy. Its great when you see a hundred orders come in, a hundred orders come in, but then you realize ive got a hundred orders i have to ship out. Shipstation streamlined that wh the order data, the weights of , everything is seamlessly put into shipstation, so when we print the shipping ll everythings pretty much done. Its so much easier so now, were ready, bring on t. Shipstation. The number one ch of online sellers. Go to shipstation. Com tv and get two months free. Its whats inside isthe person who opens it. X. Give ancestrydna, the only dna test that can trace your origins to over 150 ethnic regions. Save 20 for the holidays at ancestrydna. Com. Welcome back to cnn newsroom. Im George Howell. Another president ial twitter spat to tell you about. President donald trump blasting the father of a ucla basketball player. Lavar balls son is one of three players who were accused of shoplifting and detained in china. He downplayed President Trumps involvement in getting his son released, and that led to the twitter feud that ensued. As our Boris Sanchez reports for us. Reporter President Trump has never been one to back down from a public feud, especially on twitter. This latest one aiming at lavar ball, the father of one of those three ucla students that were detained in china during the president s 12day trip through asia. The president found out that these students were detained and white house officials tell us he personally asked chinese president xi jinping if those students could be released so that they could return home. They were and in that process the president wondered aloud on twitter whether or not these three students would thank him for his role in their release. They did. And the president actually tweeted about them subsequently, writing that they should be weary of the many pitfalls in life. We thought it was over until lavar ball, father of liangelo, gave this comment to espn that downplayed President Trumps role in the return of his son. And so the president took to twitter on sunday morning targeting him on two separate tweets hours apart. The second one the president writing, shoplifting is a very big deal in china. As it should be. Five to ten years in jail. But not to father lavar. Should