Transcript for Fallujah Has Fallen to Al-Qaeda

In the meantime, we turnover seas tonight to an ABC exclusive. America's biggest enemy making its return tonight. And where? Iraq. Al Qaeda taking over the very city where we saw the biggest American losses during the Iraq war. And tonight, American weapons on the way? ABC's chief foreign affairs correspondent, Martha Raddatz, in Iraq, where she was stopped herself, too dangerous to keep going. Reporter: When the sun goes down in Baghdad, this is what happens. The American military moves in. ABC news obtained these images. A massive American cargo jet delivering weapons to Iraqi military partners. 2,400 rockets to arm Iraqi attack helicopters, in an all-out war against Al Qaeda. A war Al Qaeda is winning. The battlegrounds familiar. Fallujah, where so many Americans fought, and died. Face after face, giving their lives. Now, with U.S. Forces gone, America's ambassador tells us fallujah has fallen to an Al Qaeda that is now rising across this country. It's a very precarious situation. They're capable of serious assaults. Reporter: Do you know approximately how many number of Al Qaeda are there in ramadi? A lot of people are saying these days you've got around 2,000 in the country. Hardcore. Reporter: An astonishing number. Fallujah is not really far from Baghdad. We wanted to see how close we could get. It would not be far. Iraqi forces are ringing the city with checkpoints and armored vehicles. About five miles out of fallujah, the roads became far more desolate. And Iraqi forces told us we should not go further. And the violence has spilled across the country to so many areas where Americans fought. In Baghdad, bombings have killed more than 700 people in just the past month, more than double the number last year. All bombings here? The jibouli family has lost three sons. All your sons gone. The oldest son leaving behind three little ones. The jiboulis tell us, if they could leave tomorrow, they would. And the ambassador says Americans back home should be very concerned about what is happening here. It's very much in our interest to have an Iraq that is stable, and not to have sectarian conflict or Al Qaeda presence that can be used to destabilize the rest of the region and potentially at some point as a platform to attack targets beyond the region. Reporter: Which is why here in Baghdad, David, the U.S. Will soon be sending, not just small arms. But tank shells and hellfire missiles. Martha Raddatz reporting in from Iraq tonight. Martha, thank you.

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