0 he also said that iran would launch major attacks on u.s. military bases across the region and block the straight of hormuz, threatening some major retaliation, if iran could strike and a major retaliation against the u.s., even if the u.s. is not involved, harris. >> harris: so, in other words, more threats continue from iran through our strong ally, israel tonight. rick leventhal, thank you very much. >> and turning now to the war in afghanistan, in another act of betrayal against our men and women might go there, a man in an after dwan uniform opened fire, killing them at a check point. it's the latest in the growing tend of so cold green on blue attacks where an afghan sister or someone dressed as one turns his gun on an ally. we told you about yesterday's insider attack that took the lies of two military soldiers. our chairman of the joint chiefs, martin dempsey not mincing word, calling the green and blue killing, saying the afghan government must take this much more seriously. connor. >> harris, so far the u.s. military has yet to find a solution tore this growing problem of insider attacks. yesterday, two british soldiers were shot and held in helmand province and today four u.s. soldiers were killed in southeastern afghanistan. according to u.s. commanders those u.s. soldiers were on the way to help a check point that was under attack. they were the shot at and four killed. the u.s. military finding out what, but manyeft the scene, fled, believe they're in identifying, possibly with the taliban, but this growing insider threat, where afghans are turning their weapons on their u.s. and international mentors is a real problem because it's undermining the trust between the international community and afghans and with the strategy of training up the afghans and the world is going down a bit, but not going away and in asia telling, i think we have to be to continue to be vigilent. i think it will end the next two days. and investigating the death of chris stevens and the other three americans you see here. leland vittert is live in chi owe and the attack is the results of a spontaneous request, but what we saw from-- the response says they don't agree. >> exactly, harris, the libyan president laid out a clear sort of case for the fact that al-qaeda was involved, and also, to the fact that this was a pre-planned attack, number one, the arrest of those foreign fighters that are pointing to and also the fact that it did come on september 11th, that he says is not a coincidence, and secondly the issue of how well-coordinated the attack was, how it actually materialized on the ground and direct fire, indirect fire, and supporting fire. lastly, he points to the the fact that not only did they attack the benghazi consulate facility there, which is a villa, surrounded by a hedge had and iron gate, but secondarily they then went after the u.s. safe house inside benghazi where the team had evacuated to and he says that level of coordination of the attacks pointed to fact this is not a spontaneous planned attacked, but by somebody like al-qaeda. >> harris: leyland, tell me this, we can see some activity behind you, what's happening in cairo right now? >> right now, you could say it's really a tense calm here in cairo and you can feel the tension, you can also smell the tension in the tear gas and on the street and so much that they have he' burned down not quite with the gun powder here. we took a look around and at one point you might call a compound and now looks more like an armed circuit. >> and this graffiti doesn't need any translation, u.s.a go to hell and it's spray painted on what they can find, including the trees. businesses reopened after the four days of riots which you can see and feel the lingering affects and the tear gas is in the haair and it's miserable and the riot broke up the concrete to throw the rocks at the police and this is the u.s. embassy, and seat barbed wire and the riot police there, probably a couple hundred riot police down the street to prevent anyone from heading down and they don't want us filming much here, we've got to be quick and give you a sense what's going on here and this is a protest by the hard liner who called for the protests originally and this is the posters asking for the release of blind cleric, behind the 1990 bomb being of the world trade center and they want him out of jail. >> now, the embassy here in cairo will be open tomorrow. there are no protests planned here in cairo, but clearly the egyptian authorities are very concerned that something could start that fuse once again and harris, as you noted in isl islambad pakistan, they believe the protests have the ability to get violent so quickly that they are taking that precautionary step of temporarily suspending operations at the embassy so there's nothing for the protesters to overrun or personnel inside, put in danger. just goes to show you how quickly things here in the middle east can change and nearly the embassy and the state department is realizing, learning from tunisia and here in egypt, how dangerous the situation can be. harris. >> harris: just so american citizens also now if they're in the area or family there, the embassy will continue services, but not exactly at that location, we need to check the website. leland vittert from the region, thank you very much. new developments to tell you about happening in chicago and the teacher's strike and what's the latest development in this union showdown will mean for those hundreds of thousands of students, who haven't been in class, and governor mitt romney. taking a detour on the campaign trail today. and what kept him from speaking to his supporters in the key battle ground states and we'll let now, stay close. 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