Transcript for Deep Dive on Global Terror Hot Spots
Now the big question, where are these terrorist sleeper cells coming from? And why? As we walk up to the mad, take a look at the urgent warning from the 9/11 commission years ago. The U.S. Government must use all elements of national power to destroy actual or potential terrorist sanctuaries. Have we heeded that warning? Terrorists are finding safe haven in so many danger Zones. Few know those hot spots better than the men we have here this morning. We start in Yemen. Home to Al Qaeda in the Arabian peninsula. Admiral Robert Harward is the former commander of centcom. Which oversees Yemen and is a former Navy S.E.A.L. How big a problem is aqap still in Yemen? They're still able to plan and execute missions outside of the country. That's a big problem. How much of Yemen is really ungoverned? Is really a problem? It almost seems like half of it to me. The large majority of the country is, Martha. That's part of the problem. How do we get to the regions where no one controls the area and get after these guys? That's tough in any book. But in this area, you have a safe haven in all of those areas. These vast areas provide a place to hide. When they're smart enough not to use communications to allow us to find them. Thank you, admiral Harward. Now, from Yemen to Syria. Its civil war creating a lawless zone, attracting thousands of western recruits to Isis. By some estimates, as many foreign fighters as were training in Afghanistan before 9/11. Just last week, the girlfriend of one of the suspects in the Paris terror attacks headed for Syria believing it would provide her sanctuary from the law. For that part of the story, we're joined by James cartwright. Retired Marine Corps general. Former vice chair of the joint chiefs of staff. Again, has this girlfriend just disappeared forever? Probably not forever. But it will be very difficult to locate her. We don't have a great presence on the ground. We don't have a great understanding of the movement of individuals through this battle space. So trying to track her down with just aerial reconnaissance will be a very difficult task. And Isis just seems to be spreading in Syria. They are. Their stated objective is to control space. From the northwest corner of Syria, down across the border, into Iraq to Baghdad and then on to the border with Iran. They have occupied a great amount of this space. They've followed the rivers. The natural resources. Most of the work done by the allies in the air campaign is focusing on the border crossings. The dam by mosul. And up by aleppo. Trying to cut the supply lines off and the ability to command and control those forces. And one thing we have learned is that the U.S. Will soon start training those so-called moderate Syrian rebels to send them back into Syria. But that takes so long. It's a long process. It's a difficult process. It's an uncertain process. But the hope is that if we can train some of these people, they'll provide us the eyes and ears we so desperately need on the ground to understand what is going on and where to target when necessary. Our thanks to general cartwright. Now, to Nigeria, where that jihadist insurgency boko harm sparked outrage when it kidnapped hundreds of girls. Last April. Now this week, reports the group used a 10-year-old girl as a suicide bomber. Part of a new wave of killing. Let's bring in Carter ham, the former commander of U.S. Africa command. And retired army general. We all watched the satellite images. The before pictures of a village there and after. Completely wiped out by boko harm. It seems to be getting worse there. I think that's right. They're more violent and have extended their reach over the past few years. We saw overnight in Niger, ten killed in protests against France. Against the magazine in France and those images of the prophet Mohammed. It does seem to be spilling across the borders. What about to the west? The danger of boko harm in Nigeria, first and foremost, they have killed thousands upon thousands of innocents and displaced more than a million. Perhaps 1.5 million. Both internally and across Nigeria's borders. So there is a real threat regionally. The great danger to the west is that that -- that power base that boko harm is seeking to establish in northern Nigeria could give them a platform from which they could extend their attacks to Europe and perhaps even the United States. And that problem of safe havens we're talking about, correct? Absolutely. To date, the Nigerian government has had only limited success in this -- thwarting efforts. Thank you. The terrorists that can wreak havoc from anywhere, at any time. This week, David Cameron and president Obama announcing new measures on cybersecurity. Joining us now, retired general Keith Alexander, former head of the NSA and U.S. Cybercommand. General Alexander, first of all, we did see a hack into central command. Isis flags flying on the Twitter account and Facebook accounts. How does that happen? Is it serious? Well, thanks, Martha. First, we have seen the number of attacks across commercial sectors and government sectors increase over the past few years. They're becoming more destructive. This is a problem we're not ready for. It's a problem we're not ready for. The Sony attack clearly highlights that we're not ready for that. Here's a destructive attack by a nation state. It shows we're not ready. It shows the way we're protecting our networks is not working. Does this still keep you up at night even though you're out now? It sure does. But I think there's a solution. And I thing -- think weave got to do that. It begins with what the president says on cyberlegislation. And what the president and the british prime minister says. We have to work with our allies. It's an urgent problem. Thank you, general Alexander. Sflonchts with all these threats around the world, the gig question, how vulnerable are we here at home?
This transcript has been automatically generated and may not be 100% accurate.