Its 10 00 a. M. In israel and gaza, where we are well into day two of a threeday ceasefire. These are live pictures from along the border where israeli tanks have drawn into defensive positions. Israel says its accomplished its mission of destroying the network of tunnels hamas used. For its part, hamas has not fired any rockets at israel since the truce began. Were covering the story from both sides of the border. Matthew chance is in jerusalem, we begin with karl penhaul in gaza city. Theres been an opportunity there to get lives some way toward being back on track. I havent seen that. What i saw when i went out into eastern gaza yesterday for example. Were people going back to look at what had happened to their homes, in most cases finding piles of rubble and ruins or structures of building so badly destroyed that they will have to be demolished. One man i spoke to had a three story family home. He was scrapping through the remnants, trying to find clothes to take home to his family. The only thing he found was a small childs top. I saw him try to pull them out. They turned to rags in his hand. There is little for many people to put their lives together again. Theyre trying to get basic necessities. One man, when i asked him, who has won this war. Has hamas gained anything out of it, has israel gained anything out of it . This is war, there are no winners. Another man said to me, weve been staying at friends, i took my family to shelter there, and my friends said, now the ceasefire has come, arent you happy you can go back home. He looked at him with a blank stare and said, i have no home to go to. This lull in the violence, can it be seen as the beginning of negotiations . Do you think those in gaza are able to go ahead with besaw a statement lagts night. Now the brigade the military wing of hamas is on board with anything the Political Leadership decided. That in many senses reading between the lines is kind of a statement theyre going back to their peace time foot being. Hamas confirms peace. They go back and allow the political wing to take over the daytoday running of the organization. So that statement from the al kassam brigades is important in that sense. Its handsing back authority to try to negotiate. The israelis are not sitting down at talks. They still regard those as terrorist organizations. So the shuttle diplomacy is going on somebody carrying mexicans from one room to another. Israel wants demilitarization of the gaza strip and the militant factions want the gaza strip to be open to live life as normal. Matthew chance is in jerusalem. Matthew, what can you tell us about expectations for the peace talks in cairo . Well, i think the expectations are high in the sense that, you know, the 72hour ceasefire is likely to be extendextended. Both sides have made it clear that theyve exhausted their reasons for being in this conflict. Israel says its basically completed the military objectives its set out to do. Hamas has nothing to gain from continuing to fight israel on the ground in the gaza strip. In terms of expectations for this delivering some kind of more permanent truce, more permanent solution to the conflict that underlies this latest violence theyve been witnessing in gaza, i think expectations are very low. Carl was mentioning the two sides come at this negotiation from very different perspectives. Israel wants an end to the rocket attacks. If that happens they say that theyll they wont any longer go in and strike gaza in the way that they have been for the past four weeks. The palestinians load by hamas and gaza, of course, want something different. They want the borders to be opened up to allow the free flow of people across them. They want the blockade, they call the siege of gaza to be ended so they can bring in goods and supplies into the gaza strip. Thats something thats been resisted by israel because they believe theres been opportunity for hamas to rearm themselves. Theyre coming at it from different perspectives. Its difficult to see how theyre going to reach some sort of compromise. You need a good media to do that. Does the u. S. Have that amongst the negotiating parties, do you think . Well, egypt is certainly playing that role. In the past theyve been pivotal in negotiating treaties between the israelis and the palestinians. A slightly different role now. The government in egypt regards hamas very negatively. Domestically in egypt the muslim brother hood has been criminalized. The members have been arrested and sentenced to death. Hamas is seen as an off shoot of the muslim brotherhood. No love lost. Nevertheless, the mood on the street in egypt, seeing so many palestinians killed. 1875 is the latest body count is creating an ee morm mouse political pressure to do something so they are mediating these talks with a view to extend being initially this ceasefire, but theres a broader issue as well. John kerry has spoken about this, u. S. Secretary of state, perhaps the two sides, he hopes, can go into the negotiations and as a result of them realize they need to get together to forge a much broader political agreement, a twostate solution where the Israeli Occupation of palestinian territories comes to an end. Thats his hope but the evidence that weve seen is that neither side at this period are ready to do that. Matthew in jerusalem, karl in gaza. Thank you both very much indeed. A buildup of Russian Troops is building fears that moscow might be experiencing another military incursion. They say that there are 20,000 Russian Troops on the border, 8,000 more than there were last week. Right now russia is staking a week of military exercises. About 800 kilometers from the border. Meanwhile, Ukrainian Forces are closing in on donetsk. The city has been a strong hold for pro Russian Forces for months. Intense fighting in the city center and heavy shelling has forced residents to move into their cellars. Nick peyton walsh is covering it. Hes talking on the ground after gunshots rang out a few meters away. Reporter its so quiet here in central donetsk. We have to keep our voices down. Intermittently weve heard heavy gunfire in what looks like the very center of donetsk. It seems like center fire, rgbs being used. The Ukrainian Military is advancing towards the city center mostly from the direction over my shoulder here. Last few hours explosions have been on the skyline to the distance over there. The key change in the last half an hour weve heard sustained automatic gunfire in donetsk. They must be edgy or in the worst situation an exchange of gunfire if they are this close, anderson. How close is the firing to you, nick. Reporter i would say two, three blocks away maximum. Pretty close, indeed. We are pretty much in the center of donetsk here. The militants have been filling out in the past two days. We drove in yesterday. It was clear they were retreating back down one of the main highways here into central donetsk and that matches with what weve seen about Ukrainian Military positions moving fast towards city center. The question is, anderson, as we know theres been a doubling of Russian Troops on the border to 20,000 in the past week. Does that suggest that moscow wants to intervene or are we looking at separatist movement here which is in its last stages as the Ukrainian Military advances, anderson . To try to give us some speculation on the crisis in the ukraine, well go to phil black. Hes in moscow. The troop buildup, phil, how can we interpret that . Reporter well, max, the russian government doesnt talk in detail about this. It has acknowledged in very broad terms having a military presence on the Ukrainian Border and says that presence is there because of ukrainian shelling which has crossed the border striking the russian military, in one case killing one russian. That is the line. The intention for these forces is perhaps more than that. You heard nick say theres perhaps around 20,000 soldiers, Russian Troops within striking distance of the Ukrainian Border. The estimate varies but it is somewhere between the 13 and 20,000 figure that are somewhere within striking distance of the Ukrainian Border with a broad range of capabilities that would allow them to move across that territory very quickly and intervene in this conflict quite decisively. No one seems to be suggesting that were talking about another land grab, if you like. Russia moving in, grabbing a piece of Eastern Ukraine and then holding onto it in the way that they did in crimea earlier in the year, but what the fear is, i think, is that as Ukrainian Government forces make gains, drive forward, reclaiming territory and really push for an outright military win which looks increasingly possible if not likely, therefore, the chances of russian intervention in some form intercrease. That increase. They are not saying anything publicly to confirm or deny whether or not that is valid. What would be their justification for that . Reporter well, russia has a tradition, if you like, of moving into neighboring countries with the intention of protecting, it says, russian speaking people, ethnic russians. Weve seen that in a number of cases, whether it was georgia in 2008, indeed, crimea just this year. And throughout this crisis russia has repeatedly said it has the right to protect people who are ethnically or culturally russian. Thats why. There was a great fear. When there was a great macing of troops russia could be moving into Eastern Ukraine. At that time they drew down those forces and seemed to deescalate the situation but as weve been reporting in recent weeks, the numbers have been on the up again, not to the same levels perhaps but to levels that are concerning. So in the event that this conflict is proceeding, russia has always claimed that it is innocent ukrainians that are suffering. Theyre targeting civilians and so forth building up a narrative that would suggest a willingness to intervene on a humanitarian pretexts, a willingness to protect ethnic and cultural russians in that region. Thats one possibility. At the moment russia is not using that sort of language, not in the way it was earlier in the year, but its clear that given the number of these forces, the capability of these forces, western countries have not ruled out the possibility that russia is preparing for the possibility of that sort of movement. Phil in moscow, thank you very much indeed. Coming up next on cnn, he is the most senior u. S. Officer to be killed since 911. After the break the attack thats raising new questions about how Afghan Soldiers are vetted. Plus, islamic militants in Northern Iraq are ordering christians to convert or else. These families were expelled from their homes on very short notice. They were told to get into their cars and leave. The top American Military officer is expressing condolences after a two star general was shot and killed by a afghan soldier. Martin dempsey said were often at risk. Major herald green was killed in kabul, afghanistan. Jim schuter has more. Reporter it was a brazen attack killing the most senior u. S. Officer since 911 and it began with a routine trip to afghanistans premiere Training Facility for Afghan Military officers. A delegation of senior american and coalition officers was visiting the Marshal Faheem university outside kabul when disaster struck. An afghan soldier opened fire. Major general herald green, the Deputy Commander of the security transition in afghanistan was killed. 15 coalition soldiers, including eight americans, were injured, some seriously. Forces responded killing the shooter. Pentagon officials tell cnn that the shooter was an afghan soldier who had been with his unit for some time and had completed a rigorous sevenstep vetting process to ensure he was not a taliban fighter. Were months away from the u. S. Handing over security responsibility for afghanistan to Afghan Forces like these. Does this undermine your confidence in their ability to take over that role . The Afghan NationalSecurity Forces continue to perform at a very strong level of competence and confidence and warfare capability. They have had a good year securing one not two national elections. Reporter so called green on blue where they attack their Coalition Partners have been an ongoing and grave problem and todays attack made clear the risk remains. As we turn more and more of the security responsibilities for these installations over to afghan troops, i think the risks will rise because since we dont control who the afghans assign to these duties, it is very easy for the taliban to infiltrate these people. As we draw down the chance increases, not decreases. Reporter i also asked admiral kirby if this eroded the trust and he says actually their trust is growing. The numbers support that to some degree. These attacks peaked in 2012. They declined significantly since then, but the measures in place to reduce that risk have only mitigated it, they have not eliminated it. As admiral kirby said, afghanistan is still very much a battlefield. Jim sciutto, afghanistan. A former afghan prisoner is set to get underway today. The u. S. Army sergeant will be asked questions by a general leading the investigation. Some say he deserted his post. Bergdahl was captured by the taliban five years ago. He was released for five taliban members in may. Hes currently back on duty in san antonio, texas. His legal team has said it will be, quote, an interesting and productive day. In iraq militants force thousands to leave their homes. Unicef say 40 children part of a religious minority have died. They died as a direct consequence of violence, displacement and dehydration over the past couple of days. The group says up to 25,000 children are now stranded in the mountains and are in dire need of humanitarian aid. Iraqi christians are also being threatened by isis militants. The sweep into Northern Iraq has driven mean to flee or go into hiding after threats on their lives. Michael holmes reports. Reporter an ancient mosque said to be the burial site of the prophet jonah gone in a cloud of dust. One of the holiest sites reveered by multiple faiths destroyed by isis. Since taking over in june, the sunni Extremist Group has targeted a number of shia mosques, religious shrines, and crackdown on minorities. This flyer orders them to convert to islam, pay a religious tax, or face death by the sword. The threat prompted thousands of christians to flee mosul in june. Some left with little more than the clothes on their backs. These families were expelled from their homes on very short notice. They were told to get into their cars and leave. On their way they were stopped, they were stripped of their possessions. Many had their i. D. S taken and they were told to simply walk away with the clothes they were wearing. Reporter thousands of displaced christians have sought refuge in the semiautonomous kurdish region. Iraqs christians once numbered more than 1 million but since the u. S. Led invasion in 2003, most have fled the country. Isiss arrival in mosul has effectively ended a presence there, one dating back to the earliest days of christianity. The head of iraqs Largest Church calls the prospects for christians frightening. Translator the future of christians is uncertain if Practical Solutions are not realized, then the number of christians will go down. Reporter hundreds of Iraqi Christians carrying banners and chanting slogans recently marred to the u. N. Office demanding a stop to the genocide targeting their faith. Translator this is a crime against iraq. Christians and muslims, we live together as brothers for a long time. We just want the peace and love. Reporter from baghdad to washington, isiss persecution of christians has been internationally condemned. The humanitarian situation is extremely serious and it is heartbreaking particularly when it comes to christian minorities and other vulnerable groups. Reporter but little is being done, and Iraqi Christians who have said mass in mosul for more than 1800 years are now gone, forced to observe their faith elsewhere now. Michael holmes, cnn. Still to come on cnn, a second american infected with ebola has arrived in the united states. Well bring you an update on her condition after this. First, cnn takes you exclusively to the epicenter of the outbreak. A staggering battle thats facing Health Care Workers in sierra leone. For the last two weeks theyve doubled their capacity here of confirmed ebola patients, and theyre doing all they can to help those who are sick, but theyre absolutely at capacity here. Well, a second american affected with ebola is getting treatment at Emory University in georgia. Martha writebol was given a serum. A spokesperson said the missionary is still very weak but shes showing signs of continued improvement. She joins her colleague, dr. Kent brantley whos already being treated at the hospitals highly specialized unit. The World Health Organization says there have been 887 deaths from ebola and more than 1600 cases since the outbreak began in march. Most have been in guinea but sierra leone is battling a rapidly growing number of cases as well. David mckenzie gained exclusive access to doctors and patients at a busy Treatment Center in sierra leones hard hit calhoun. Reporter taking incredible care to combat an unprecedented outbreak. Gloves. Reporter ebola can lead to death with one drop of in23ek9ed fluids. Thats why we take every possible precaution to effect that. Reporter already dozens of doctors and nurses have died. Dr. Stefan kruger said he had to come. This is where they need us and theres a really big lack of resources and at the moment in calhoun, if there wasnt trea