Hello and welcome to our viewers. Im Michael Holmes with cnns breaking News Coverage of israel at war. It has been a day now since israel issued an ultimatum to evacuate Northern Gaza immediately, warning that increased Israeli Military activity against hamas would be imminent. Tens of thousands of palestinians were scene leaving their homes in gaza city throughout friday, carrying what they could, but many are deciding not to evacuate or simply dont have the means to do so. Most say they have no safe place to go and on top of that, hamas told them to stay in their homes. With so many people suddenly streaming into southern gaza, the only place to actually leave the strip is the rafa Border Crossing into egypt and that isnt open. Egypt says theyve not closed their side, but the status is unclear due to israeli air strikes on the gaza side. The Israeli Military says it carried out a limited raid in gaza primarily to seek out intelligence on the estimated 150 hostages. An unknown number of hostages are americans. On friday u. S. President joe biden spoke with their families by video call. He said the u. S. , in his words, is working like hell to get their loved ones home. Besides sending a u. S. Carrier group to the region, the pentagon has called up a Rapid Reaction marine unit in case they are needed to move closer to israel. Palestinians ordered to leave a day ago and head south. Now were hearing reports that people who did choose to evacuate have been hit by strikes. Reporter absolutely. We are learning from the Palestinian Health ministry in gaza some pretty distressing reports. They say those attempting to flee or rather some palestinians attempting to flee from theered defense forces, Heading Southward Were Sttargeted by an israeli air strike. Whole families were targeted as they were fleeing. At least three ambulances were struck. We have pretty distressing footage shared by the Palestinian Health ministry in gaza. Warning to our viewers, this is distressing and graphic. As dawn breaks in gaza, now under bombardment by israel for seven days, a sinister warning from the skies. Pamphlets from Israels Defense Forces telling all civilians in Northern Gaza to evacuate south wards. Were seeing our children killed right in front of us. Theyre starving us. We have no electricity, nothing. This isnt a life. Now they tell us we have to leave, but we dont know where we will end up. Hamas leaders have called on civilians to stay put, accusing israel of engaging in psychological warfare. Families gather their belongings. While they are unsure what awaits them in the south, one thing is clear. There is no guarantee of safety wherever you are in gaza. It happened to our grandfathers a and now its happening to us. We are being forced out. Gaza is being destroyed. Nothing is left. Its a catastrophe. More than half of those are now being told to move. The Norwegian Refugee Council has characterized the evacuation order, which holds no guarantee of safe return, as an act of forcible transfer. In other words, a war crime. Meanwhile, the u. N. s Refugee Agency for palestinian says the scale and speed of the unfolding humanitarian crisis is bone chilling. On the move are more than 1. 4 Million People in gaza. These are ordinary palestinians who live in the gaza strip with their families, including pregnant women, children, children with disabilities. Reporter an ongoing siege means access to food and water is quickly running out. The u. N. World Health Organization has warned that hospitals here have only a few hours of electricity each day, pushing gazas already crumb bling Health Care Infrastructure to the brink of collapse. At one hospital, the bodies of those killed in the air strike lay shrouded outside. There is, doctors say, simply not enough space in the morgue. They were all innocent civilians, women, children. The air strikes came suddenly and destroyed all our homes, with children still inside. Now we dont even know where we can bury our dead. Enough, please, enough. In less than one week, israel has dropped more than 6,000 bombs on gaza. The equivalent to the total number of air strikes carried out during the 2014 israelgaza w war. There is every indication that this war will only intensify. Many here feel that the world has abandoned them. A week on since these air strikes began and the death toll in gaza is topping more than 1900 people, we are learning more distressing details about the air strikes, the impact this is having on gazas Civilian Population. Gazas Health Ministry as well as Human Rights Watch has now accused Israels Defense Forces of using White Phosphorous munitions. These munitions are known to burn flesh right down to the bone. Israel has denied these allegations. They say they are doing everything to minimize Civilian Casualties by telling civilians in gaza to move southwards. But they fear by moving southwards and having the opportunity to remove onwards through the Border Crossing via egypt if it does become open, many fear they will be refugees and no longer able to return home. To discuss further, were joined by the spokesperson for Israels Defense Forces speaking from tel aviv. Thanks so much for being with us. Ordering civilians from a city the size of gaza would seem to signal a potential move on the ground by israel. How realistic is it for hundreds of thousands of people to move south let alone with no food, water or housing if they got there . I think it is feasible and i think it can and i think it should be done. Anybody who wants to prioritize his safety should heed our warnings and go south of the gaza river. I completely understand that it is far from an ideal situation, but this is the situation that we find ourselves in and we are doing our best to minuimize Civilian Casualties. Thats why were calling on them to leave out of concern for their safety. Israel has cut off food, water, electricity and fuel for gaza. Will it allow aid to come in for those who do go south and find themselves without anything . Well, the problem with the gaza strip, ever since 2007, is that its governed by a crazy fundamentalist Organization Called hamas. Israel controls everything that goes in or out. Will you allow aid in for those who make it to the south and have nothing . Yeah, i was about to answer. The problem is that aid that goes in intended for civilians is taken by hamas. Water pipes are turned into rockets. Cement meant for buildings is turned into tunnels. Food for orphans and People In Need is given to hamas operatives. And fuel for the hospital is taken to hamas bunkers. So we are in a state of war. In a state of war, i dont think it could be really expected or demanded of us to provide sustenance and the combat capabilities to our enemies. So you wouldnt allow aid groups to take materials in, tents even for people to stay in . Because there isnt room for a Million People in southern gaza. I think that there is room. Lets not go into by the way, im not saying we are categorically not going to. Im saying that at this stage what we are focused on is on our combat operations. Okay. Again, let me please remind everybody how this started, because thats a bit missing from the coverage of the last day. This started with a war that was forced upon us, not our initiative and we didnt start by killing 1300 civilians and soldiers and wounding 3,000. They did that. Hamas bears responsibility for the situation. That is too absent from the discussion here. Hamas is sovereign in gaza. They launched the attack against us. Now we are responding against their atrocities and we are doing our best to execute our tasks without killing civilians. It was indeed a horrible terrorist attack. Theres no doubt about that. The order to move those people, clearing the way for a Ground Incursion, how long will israel wait for that and how long could it last . Those are very good questions. I think that the answer to the first one is that well have to assess the situation on the ground, see how many civilians are left in the area, understand how many of them have been blocked by hamas from actually evacuating. Weve seen active efforts by hamas to block these people from leaving, which i think is appalling at a whole new level. Once well see that the situation will be permissible for significant combat operations, then they will commence. I really urge all civilians in Northern Gaza to vacate, to evacuate, to go south and not listen to the very cynical orders given by hamas to stay in the area, because it will just endanger them and it would only serve hamas and their propaganda purposes. Israel has had five wars in gaza, saying each time it will crush hamas, cut the head off the snake. And yet here we are. Why do you think this time israel will succeed . And who would run whats left . Yes, i would definitely not compare the previous five rounds, none of them defined as wars by israel to what were facing now. I think the biggest difference is how this started. This started with an unprecedented attack, which we spoke about before. That is the biggest difference. I think israel cannot by any measure end this war Here Without A Complete Dismantling Of Hamas and its military capabilities. Nothing less will be applicable, not for israel, not for the region. Lieutenant colonel, thank you so much. Appreciate you making the time for us. Thank you. A quick break now. When we come back, a Music Festival that began with peace, love and joy, devolved into a Killing Field of horror and death in southern israel. New details of the massacre coming up. Horrific details continue to emerge about the brutality that hamas militants unleashed on hundreds of civilians in southern israel one week ago. Cnn conducted an extensive investigation into how the massacre unfolded. We want to warn you. Some of the images youre about to see might be disturbing. Reporter 6 30 a. M. At the Nova Festival In The South of israel. We were having fun, peace, love, good vibes. An hour and a half after, we are running from bullets. Reporter suddenly the music stops. Theres frustration, but no sense yet of the horror about to unfold. As news spreads of attacks from gaza, People Crouch close to the ground. But this doesnt lead to outright panic. Rocket attacks are a common occurrence here. About ten minutes later, some start heading to their cars. The decision of how and when to leave the festival would mean life or death for many. Some fled early to nearby bomb shelters. At 7 10 a. M. And many are crammed in this shelter. Hamas throws a grenade inside, causing horrific damage. This man emerges stunned into the daylight. Its not the only shelter to be targeted. 30 minutes later and further down the same road, hamas militants are captured on dash cam footage outside another shelter. They throw another grenade inside. Over the next six hours hundreds of civilians were killed, hunted down as they try to flee the festival. Cnn has established that hamas surrounded the festival, blocking three approaches to the south, north and west, forcing people to flee across the fields to the east. Even then, they were hunted. Its now 8 15 a. M. Some survive by running across the fields. Local police and security told them to drive east across rough land due to roadblocks on the main road, but many end up fleeing on foot. People were running in the hundreds. You can hear the bullets coming. Were you seeing anyone get shot . Yeah. You could see people fall. Reporter its 8 30 a. M. As gal and others continue running, met with bullets and a police blockade. As a result, they start running back down the main road towards the festival, not knowing there are more militants just a few kilometers further down. On that same road, chilling dash cam footage shows hamas militants shooting directly at an approaching car just an hour earlier. Those festivalgoers that remained closer to the concert site, hid in anything they could find, even behind trees. Many did not survive. 260 are reported dead, but that toll could rise. Just three hours after the start of the massacre at 9 39 a. M. , videos emerge of some festivalgoers already held hostage in gaza. This man still wearing a Festival Wristband and another visibly wearing the security uniform. Their fates remain unknown. Gal and others are still processing the trauma of what they went through. I know people who were like 12 hours in bushes and they didnt move. I know people who tried to hide and they died. Humanity never seen this in the last couple hundreds of years since maybe the holocaust. But this is just horrific, horrific. Reporter it would be ten hours until help arrived for some. Others are still missing, feared dead or held hostage in gaza. Many of you may want to help with humanitarian relief efforts. Cnn is compiling resources. Head over to cnn. Com impact. Youll find a list of organizations responding on the ground. Cnn. Com impact. Thousands of gaza residents evacuated their homes on friday, but for many there is no way to leave and no hope of finding safety from the escalating conflict. Well have more on our coverage of the war in gaza when we come back. Welcome back. Im Michael Holmes. The United Nations says Tens Of Thousands of people have fled their homes in Northern Gaza over the past day or so after israels military warned civilians to leave gaza city. Thats in addition to the more than 400,000 palestinians who were already displaced by the conflict, forced out of their homes by this conflict. Civilians who were able to on friday crammed possessions into cars and trucks in a rush towards the south. Those without other options walked, carrying what they could. The u. S. Has continued to press the egyptian and israeli governments on opening the rafa Border Crossing from Gaza To Egypt to allow people to get out and open a corridor for humanitarian aid to get in. Meanwhile, israeli war planes kept up their bombardment of gaza and conducted raids inside the enslave, searching for perhaps as many as 150 hostages still held by hamas. The raids are the latest sign that israel is ramping up operations after hamas after the militant groups Terror Attacks inside israel one week ago. Cnns Nic Robertson reports. Reporter Israeli Troops Inside Gaza for the First Time Since the attack last saturday, searching for hostages, seemingly over by the time the idf announced it late friday. Not far away northern Gaza Civilians are being forced into a life or possible death choice. Fliers dropped by israel told them to flee south now. The United Nations considers it impossible for such a movement to take place without devastating humanitarian consequences. Reporter no deadline given by the idf in their effort to minimize mounting Civilian Casualties. We are asking them to evacuate so that we will be able to continue to strike military targets belonging to hamas in the gaza strip. Reporter thursday night, the heaviest israeli strikes on Northern Gaza yet. Hamas is telling its residents to stay put, setting the scene for a potential blame game over the rising Palestinian Death toll. Hamas actually gave a counter order, telling palestinians in gaza to stay at home. Why . Because having human shields, they think, protects them. Puts them in places where they will be in danger. Puts them in places where theyre used in effect to try to protect hamas officials or their equipment or infrastructure. Reporter all of this as israels Troop Buildup at the border grows, signaling a larger Ground Attack may be getting close. U. S. Secretary of defense in country, making sure the idf has what it needs. I am here in person to make something crystal clear. Americas support for israel is ironclad. Reporter and not just military support. Eu leaders came close to gaza to see for themselves where some of hamas most brutal murders were executed. But inside gaza, fears escalating about what the coming days will bring. Time is running out to prevent a humanitarian catastrophe. Fuel, water, food, and Health Supplies cannot be urgently delivered to the gaza strip. Reporter apprehension on both sides of the border growing as troops ready for an expected longer and much more dangerous raid. Nic robertson, cnn, israel. A Visiting Professor at the department of Political Science at the University Of Alberta grew up in the refugee camp in gaza joins me live from edmonton in canada. Professor, thanks for making the time. This is personal for you. You have family in gaza. You were brought up there, had relati