this is cnn breaking news. >> welcome back, everyone. top of the hour. this is "cnn tonight." i'm don lemon. >> and i'm alisyn camerota. we've got much more tonight on the death of robin williams and how his co-stars are reacting. also, the death of hollywood icon lauren bacall in new york today. plus, our breaking news out of iraq. more than 130 additional u.s. military personnel being sent to

deal with -- help deal with the humanitarian crisis. >> meanwhile, the sixth air drop by u.s. military plans near mt. sinjar was conducted tonight. are we on the verge of getting in deeper in iraq? and in the wake of a shooting death of an unarmed teenager michael brown by a police officer, what will black parents tell their sons, and how will we all keep them safe? all right, don. but we begin with reaction to the death of robin williams from two of his best loved costars. we talked about this last night. he teamed up with billy crystal and whoopi goldberg, you remember, to raise some $80 million for people in need with a series of those comic relief specials. billy crystal tweeted these words, which were simply no words. and then whoopi goldberg, she agreed, tweeting billy crystal is right there. are no words. we will have much more tonight on "cnn spotlight, robin williams" with nischelle turner at 11:30.

>> right after this broadcast. we're going to begin with breaking news out of iraq. the pentagon sending 130 additional military advisers. the group is made up of marines and special operations forces, and they will assist in the rescue of thousands of yazidi refugees fleeing the violent isis militants. defense secretary chuck hagel says this is not a boots on the ground combat operation, alisyn. >> meanwhile, the u.s. launched more airstrikes against isis positions today. but the group remains a powerful threat. and it's led by an extremely violent and mysterious man. here is cnn's jean casarez. >> reporter: is this the most dangerous man in the world? rising from the shadow of al qaeda, the leader of isis, abu bakr al baghdadi. this recent video reportedly shows the reclusive leader at a mosque in northern iraq. it's the first time even some of his followers laid eyes on him. >> he is iraqi, of course, and

he came from a relatively poor family. he studied islamic law. >> reporter: baghdadi, who is in his early 40s has not always been thought of as the terrorist leader he is today. in fact, u.s. forces captured him in fallujah in 2004 and held him in camp buca. a skilled former amateur soccer player, he was considered a low level al qaeda member, according to a pentagon spokesman, a review board recommended his unconditional release. >> so he came really pretty quickly up to the top. and having got to the top, he then showed himself to be quite an able leader in an extremely ruthless and really good organizer. >> reporter: so what happened? terrorism expert richard barrett believes al baghdadi's time in u.s. captivity motivated him to build his base. >> i think two or three other people who are now in the very, very senior ranks of the islamic

state who were in camp buka qa the same time. >> he lams to be a descendant of the prophet muhammad. and even tries to emulate his mannerisms by praying like him. but others he claims promoting brutality. propaganda videos have thousands of iraqis fleeing for their lives. baghdadi himself is living in the shadows, often stairing into skies. >> prepared to work with closest but keep everyone else unaware of his identity at least. he slowly sort of annihilated or assassinated his rivals. >> reporter: intelligence experts believe al baghdadi has done a good job of organizing his forces. >> he certainly has expressed in the past that his ultimate target is going to be the united states. >> reporter: now they fear isis

may even be more dangerous than al qaeda. jean casarez, cnn, new york. >> we're joined by retired army general peter mansoor and author of "baghdad at sunrise: a brigade commander's war in iraq" and the director of site intelligence group. rita, i want to start with you. how did this guy baghdadi become the head of these 20,000 terrorists? >> well, abubakar baghdadi was the head long before he joined al qaeda, as accused to be al qaeda in iraq before it changed its name to isis and then the islamic state. he used to be a head of sharia committee, the religious committee of the group, local group in samarra. after zarqawi is dead, created

the consul. and we really have to remember that the whole idea of creating an islamic state or a more general organization is an idea that has been within the group since the beginning, since it was created by abu musab al zarqawi. and the bottom line is after zarqawi was killed, one of the successors was baghdadi. and after that killed, about baghdadi's background for that whole time since 2003 or '04, until the day he became the leader was in the religious committee. he was not in any military position or strategic position. he was the head of the sharia, the religious committee. so it is pretty surprising that after he became the head, here we are finding him as the person who is leading the largest

probably the most intimidate organization in the area. >> you make a great point. colonel, i want to talk to you of the news of the day that is the u.s. is sending these other 130 advisers to iraq. what are we to make of this? >> i think what we're going to make of it is that the united states is going to rekindle its alliance with the kurds. they're a long-standing ally and protector of the united states. we wanted to funnel all aid and support through baghdad. but when the kurdish region was directly threatened by isis fighters recently, i believe that this administration has decided that it's incumbent upon the united states to send aid directly to erbil. and that is in the form now of weapons and ammunition, and now advisers and air power as well. >> i want to follow up on that, peter. is isis, then, in your estimation more dangerous than al qaeda? >> yes, because it's better financed than al qaeda now. it's the best financed terrorist

group in the world. it has -- it's the best armed terrorist group in the world, all the weapons it seized in mosul. and it's the most experienced terrorist group in the world with all the combat experience it's gained in syria and now in iraq. >> so the question is how did it get to this point where now we're having to send these specialists in and all of these people in all of the sudden. shouldn't our intelligence have known about this? >> well, it did know about it. but intelligence requires a willing receptor on the other end. and i believe the administration overlooked the reports it was getting that this group was metastasizing in syria and growing stronger. and we also overlooked the capability of the iraqi security forces to defend against it. so even though they might have thought that isis was gaining strength, they thought that the iraqi army could deal with it. and that clearly was not the case. >> and rita, it's interesting. because obviously when the u.s.

wanted to get al qaeda, we went after the leadership. but it sounds like we're taking a different tact with isis. >> i mean, look, it's important to mention that isis has always been a problem, a real problem that unfortunately was pretty much ignored by the administration and other countries. especially the warring in syria made the group much stronger, and it was able to definitely create much more better momentum in recruitment and training to become really one of the most powerful terrorist organization in the jihadi world, more powerful than al qaeda to the point that it was able to even dismiss al qaeda's being part of al qaeda and distance themselves. and to the point that currently their recruitment process within the online community is something that has never, ever

seen before. >> yeah. >> so this is a group that we cannot -- we cannot describe or see as a problem of the iraqis, a problem that the iraqis and the people in that area has to face. but it's a problem that the west in general need to understand that must take part in order to dismantle. it has to be dismantled. there is no doubt that it's more dangerous. i mean, thinking about the fact that we're calling it even more dangerous than al qaeda. >> yeah. >> this is a joke. >> rita, we've got to run. >> it's so true. and we've shown some of those recruitment videos. and they are hideous. rita katz, colonel mansoor, thank you for that information. when we come right back, outage growing over the unarmed shooting of a teenager by a cop. and now parents are agonizing what to say to their sons. we'll get into that next. and now angie's list is revolutionizing local service again. you can easily buy and schedule services from top-rated providers.

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the shooting death of unarmed 18-year-old michael brown at the hands of a police officer has black parents across this country agonizing over what to say to keep their sons safe. cnn's stephanie elam has more now. >> as a parent, you have to worry about everything that happens once your kids step outside. >> reporter: regardless of wealth, education, or shade of brown, parents of black children across this country are worried. >> it makes me think about one of my own. >> reporter: trayvon martin, now michael brown in ferguson, missouri, another unarmed black teen dead. >> here we go again. >> reporter: how to keep black boys safe. i spoke with several parents, all of whom say there are unwritten rules for raising black boys. make sure they understand they may be judged for color of their

skin rather than the content of their character. >> appearance is big. >> you show me your friends, and i'll show you your future. >> pull the pants up. >> do not have more than i am e

way i look? >> it's a lesson that can rob them of their innocence. they also talk with their 15-year-old son about racial profiling. to explain to him that he actually does have a target on his back, then you are not doing your job as a parent. >> reporter: kelly knox's son is 26, and she still reminds him of her rules for survival.

>> i've had these conversations >> reporter: kelli's son joseph was at first reluctant to speak with me. what made you change your mind? >> well, i figured i would like to give a perspective of a kid who you know, i don't look like trouble, i don't dress like it. i went to college and graduated. and i still have problems like the next kid. i've gotten harassed by cops. i've gotten a gun pulled on me. i've been told to crib walk and

i never gang baited them in my life. >> black males are criminalized from the time we enter into the quote/unquote system. and i'm talking about school. and i'm talking about school. from the time childr

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definition of generosity. >> christopher reeve told cnn's larry king all about it in 1996. >> 22 years, we go back to juilliard together. but there is this crazy cockamamy story that went around that we signed some pact. >> pact? >> yeah, like on a napkin in the cafeteria in juilliard or something. >> saying what? >> that if either of us gets in trouble, that we'll take care of each other in the future. >> in 1976, he left juilliard. williams was on a fast track. >> nanu nanu. >> mork was such a success on "happy days," it would spin off as its own sitcom. >> you know, when he would break

for lunch, and he was working with jonathan winters on his show "mork & mindy," they would walk down the street together, and all of the sudden just stop. and then they would start to kibitz. and then they would start to improvise. and then they would do this routine. in minutes, almost the entire lot was standing there like an open air theater. watching these two great minds go at it. >> it's a man! >> reporter: in the years after "mork & mindy," williams would have great success on the stand-up comedy circuit. >> it's been brief. 'tis over, and the lights do turn bright. i'm melting! help me! >> a comedic genius fueled by his incredible improvisation, something he discussed with james lipton on "inside the actor's studio". >> are you thinking faster than rest of us? what the hell is going on? [ laughter ]

>> what it is about the mind? i can't explain itself. >> but it wasn't just williams' brilliance. during those early years, cocaine also fueled him, and a frenetic unpredictability became a hallmark. it would be the death of his friend john belushi in 1982 and the birth of his son that scared williams straight. years later, addiction became part of his historic stand-up act at the metropolitan opera house. >> you know what i'm talk about? the peruvian marching powder, the devil's and the rough. it's a nice thing, though, cocaine. what a wonderful drug. anything that makes you paranoid and impotent, give me more of that. >> coming up, a sober robin williams wins over the world,

but his depression is still lurking. ♪ ♪ ♪

♪ trouble makers. ♪ dreamer of dreamers. ♪ ♪ trouble makers. ♪ ♪ (chinese singing) ♪ ♪ ♪ we are the y-a-o! ♪ ♪ (chinese singing) ♪ oh... oh... oh... oh... ♪

mark calling orson, come in, orson. >> in 1980s robin williams was still starring in the popular sitcom "mork & mindy" when he made his big screen premier as popeye for director robert altman. ♪ i yam what i yam what i yam >> popeye and the films that

followed were mostly disappointing. >> good morning vietnam! >> finally, director barry levinson found the actor a role that offered the perfect fit. >> is that me or does that sound like an elvis presley movie? viva dan nang. >> his role as a disk jockey earned him an emmy for best actor. >> too loud? >> as did his role as a quiet and inspiring boarding school english teacher in 1989's "dead poets society." >> dead poets dedicated to sucking the marrow out of life. >> i think dead poets was probably my favorite. the idea of doing a movie that people treated as more than a movie. i once met a guy who said i gave up my job at sears and became a teacher because of you. i went i hope things are going well. >> williams earned a third such oscar nod for a picture of a man who becomes unhinged and homeless after the murder of his wife. >> i'll come back in the morning and i'll call you if you let me. >> then came his role as sean

maguire, community professor and psychologist. >> you don't know about real loss because that only occurs when you love something more than you love yourself. >> finally, in 1997's "good will hunting," the role that brought him his one and only academy award for best supporting actor. >> you're terrified of what you might say. >> even while tackling his serious roles, williams never stopped being funny. and it seemed he was always on. >> movies on a plane and you see people saying just let me off. don't you understand, i can't stand the movie. >> i've had movies that i've had premiers on planes. >> that's when people go i don't need the headset, thank you. >> can you put us down in denver? we just don't like this. >> we were going to tokyo, but

please let us off! >> williams and billy crystal teamed up with whoopi goldberg to co-host you keep going becau is a strange secret organization that you go to. >> alcoholics anonymous. >> don't say it! shh! it's unanimous shh. you go to those and you've done things that make other people look amish. you come out the other side. i almost have a year now without that so it's good. >> but staying clean and soak worry remain a challenge for williams, even as other participants of his life seem to

be unraveling. in 2008, his 19-year marriage to his second wife would end in divorce. then 2009, he would be rushed to the hospital. heart problems. surgery, and the difficult recovery he would laugh about on the ellen show. >> you a heart surgery, and literally, they open you up. they crack the box. and you get really vulnerable. you'd be like a kitten, oh, god. it's a kitten. and you get very, very emotional about everything. but i think that's in a way a wonderful thing. it really openious up to everything. >> robin williams' life trajectory would take a decided upward turn two years later there was marriage to third wife susan schneider, and his broadway acting debut in "bengal tiger at the baghdad zoo" with williams playing the tiger who narrates the play. >> it's alarming, this life after death.

the fact is tigers are atheists. all of us unabashed. >> then just last year, his career came full circle. >> you look like an alien. >> but offscreen, williams was struggling with depression. >> he had at least three reasons to have severe depression. he clearly had the genetic basis for it. he had addiction. it affects the brain. it causes severe depression. >> unresponsive with a belt

secured around his neck, the other end of the belt wedged between the closed closet door and the door frame thinking poor man, and he survived his cardiac disease he survived. but the bain disease, he was taken way from his family, us, himself, the brain disease is what took him away. >> took him away from family, fans, and friends. stunned by the loss. >> yesterday we had a superstar. today unfortunately we have a legend.

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♪ a brilliant comedian, award winning actor, husband, father, and friend found dead in his home at 63. robin williams was beloved by those who knew him. >> we're mourning the loss of such a great man. and he was a friend and i admired him. and, you know, he is a legend. it is unbelievable. >> one of the greatest we were all blessed to have that experience. and those of us who have had a chance to work with him are even more blessed. if anything else, i learned how wonderful it is to be an artist by watching him. how wonderful it is. rest in peace, my brother.

>> he was also revered by the fans whose lives he touched. >> there is no one that can top him. >> for me, this is my hero that has passed. and it's a really devastating time. >> you're having a bad day or down for any reason, watching any of his movies could lift you up. >> the closest to williams say they're overcome by profound grief, but want his legacy to be one of happiness. robin's wife susan schneider released a statement reading in part, as he is remembered, it is our hope the focus will not be on robin's death, but on the countless moments of joy and laughter he gave to millions. various marquees of l.a. comedy clubs paying tribute from the comedy clubs of hollywood to the san francisco neighborhoods he called home. on the streets of new york and in the halls of washington, the outpouring of tributes to williams are a testament to the impact of his work. president obama recalled some of his most memorable roles.

robin williams was an airman, a doctor, a genie, a nanny, a president, a professor, a bangarang peter pan, and everything in between. but he was one of a kind. he arrived in our lives as an alien, but he ended up touching every element of the human spirit. williams' spirit was described by those who knew him as electric. henry winkler worked with him on the tv series "happy days". >> he was electrifying. and he was like that no matter what he did all the time. when i watched him, when we crossed paths, when he was doing his show up the street on paramount, all i saw was boundless energy. he would work all day. he would go to the clubs at night and do stand-up and work on his act. you met him and there was a wave of warmth that swept out of him that covered you like a blanket. >> his talent? >> irreplaceable there is no one

to now fill his shoes. those shoes will remain right there empty forever. >> comedians at caroline's in new york remember williams with admiration. >> he was a genius. he was very, very quick. if you laughed at one of his jokes, if you didn't get it, he was on to the next one. so a lot of times when you watch his stuff you have to rewind it and go back because he is just so fast, and it came naturally to him. >> and at l.a.'s comedy store where williams' career took off in the '70s, paul rodriguez choked back tears. >> i was working at the comedy store in the parking lot there, hoping for open times. he talked to the owner mitzie shore and said this kid deserves to be on the lineup. and i got on the lineup. >> pauley shore, whose family owns the club reminisced. >> when we used to have the office at the comedy store at my mom's house on doheny, robin used to pick up his check from "mork & mindy" in his outfit, in

his nanu nanu outfit. and he used to pick up his check and do nanu nanu to me. >> in hollywood, williams is already an icon. >> yesterday we had a superstar. today, unfortunately, we have a legend. >> as an individual, i think he had a lot of heart and a lot of compassion. he did a lot of things for a lot of people, publicly and privately. he transcended his supposed sphere of expertise, which is like a benchmark as a kmedian, and he crossed over into other areas and excelled at everything. he is gone way too soon. he was very talented, and we're all going to miss him. >> he will be missed for more than his talent. u.s. secretary of defense chuck hagel expressed appreciation for his military support, saying from entertaining thousands of servicemen and women in war zones to his philanthropy that helped veterans struggling with hidden wounds of war, he was a loyal and compassionate advocate for all who served this nation in uniform. he will be dearly missed by the men and women of dod, so many of

whom were personally touched by his humor and generosity. >> we've raised over about a million dollars. i think there is more coming in. i feel real good. >> an active supporter of comic relief from its inception in 1986, williams helped raise more than $50 million to combat homelessness. regarding the shocking news of his dear friend's death, billy crystal tweeted "no words." >> darcy here grew up riding horses. >> williams was also a tireless advocate for st. jude's cancer hospital. >> a tough girl battling a rare and inoperable brain tumor. >> generous is a word to describe him time and again by those who knew, including "bird cage" co-star nathan lane. he said what i will always remember about robin, perhaps even more than his comic genius, extraordinary talent and astounding intellect was his huge heart, his tremendous kindness, generosity, and compassion as an acting partner,

colleague, and fellow traveler in a difficult world. a difficult world made lighter by the laughter williams brought to it. williams leaves more comedy work behind. he has several upcoming films, including another "in the night at the museum" series. williams who spoke often and lovingly of his three children might likely consider them his greatest legacy. his daughter zelda paid tribute to her father on twitter with a quote by the french writer, you, you alone will have stars as no one else has them. in one of the stars i shall be living. in one of them i shall be laughing. and so it will be as if all of the stars will be laughing when you look at the sky at night. she added i love you, i miss you. i'll try to keep looking up.

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the u.n. warns iraqi yazidis are facing genocide. a troubled soul. new details about the apparent suicide of entertainer robin williams. ebola outbreak. an experimental drug that could save lives. convoy controversy. ukraine threatens to stop a russian aid convoy bound for ukraine. and the passing of another screen legend. lauren bacall has died at the age of 89.