Nightly News | August 04, 2013
>> the embassy in cairo is among those affected by this order. tonight our chief foreign correspondent richard engel has more on precautions there and insight into are where this threat is coming from.
>> reporter: good evening, lester. these are the side streets around the u.s. embassy here in downtown cairo . the embassy today is closed like so many embassies and consulates in the region, and as you can see the embassy tonight is right behind this very big, very imposing concrete barricade. this wall went up about a year ago after a group of demonstrators tried to storm ip inside the compound. this time we're told the threat goes right back to yes, ma'am p, specifically to al qaeda in the arabian peninsula , which is based in yemen. the group is considered capable. it has many skilled bomb makers. and it is also motivated right now because in the middle of last month one of the group's deputy commanders was killed in a drone strike. the man who has replaced them, the group's new leader, is considered perhaps even more dangerous at one stage he was osama bin laden 's secretary. and some intelligence analysts say he may be wanting to prove himself to try and exert himself on the international stage by carrying out some sort of terror attack in yemen or abroad. but not all u.s. diplomats are happy with this situation. they say there needs to be xurpt, but they also say they can't do their jobs if they're locked behind big walls like this one. lester?
>> richard engel reporting from cairo.