US Bombs ISIS Militant Targets in Iraq

Video shows the impact of the strikes aimed at preventing the violent group's advances.
3:42 | 08/09/14

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Transcript for US Bombs ISIS Militant Targets in Iraq
Thank you so much. We start with that breaking news. U.s. Warplanes bombing militant targets in Iraq. Dramatic new video showing those massive explosions aimed at trying to stop the violence from Isis from advancing on a terror where there are roughly 150 Americans and ABC's Jon Karl has the latest on the mission from the white house where the president is getting ready to leave for summer vacation. Good morning, Jon. Reporter: Good morning, Paula. Welcome to weekend "Gma." Great to see you there. The president leaves later this morning for a family vacation on Martha's vineyard but this will not be your typical family vacation. He is leaving with senior members of his national security team including national security adviser Susan rice and will be closely monitoring U.S. Military operations over Iraq. Reporter: Breaking overnight the Pentagon released new video of the latest air strike in Iraq. Bombs can be seen as they drop from the sky. Exploding on a target in northern Iraq. American forces have carried out several bombings missions with f-18 fighter jets and drones hitting terrorist armments and a convoy moving towards erbil where 150 American diplomats and military advisers are posted. Along with the bombs, a humanitarian mission is under way. Military dropping food and water for thousands of members of a religious minority trapped by Isis on a mountain and threatened with death. We're in some sense committed to their protection by having gone there and provided humanitarian aid. Reporter: One key concern, this dam in the city of mosul located some 200 miles northwest of Baghdad. The state department confirms it is now under the control of the terrorist group known as Isis. Not only does it supply electricity for much of Iraq, if Isis were to open the floodgate, the water could flood all the way down to Baghdad including the U.S. Embassy. They're controlling dams and rivers and roadways. These are all ingredients to a sustained presence for Isis. Reporter: As president Obama leaves Washington to begin his vacation he is promising this operation will not be the start of a larger mission, ruling out any ground troops. As commander in chief I will not allow the United States to be dragged into fighting another war in Iraq. Reporter: In an interview with "The New York times" president Obama reiterated that this will be a limited mission telling "The times" that it will be up to the Iraqis to defeat Isis, the cavalry is not coming to the rescue, he said. The United States has no interest in being the Iraqi air force. Paula. I'll take it from here. Let's bring in ABC news military consultant Steve ganyard in Washington this morning. From a military perspective what exactly are we trying to achieve here and is it likely to work. Good morning, Dan. I think it will work. That's the short answer here. What we're trying to did is prevent erbil from falling from kurdistan from falling, prevent Baghdad from falling and so going in with some very limited air power, stopping the advance, being able to hit artillery pieces, convoys, things like that that will stop Isis, I think American air power can be very effective to at least stabilize the situation. And how likely -- how long is this operation likely to last? Well, it's up to the president. You know, I think it'll be just a couple of days before we can stop Isis and they'll know they no longer can command the roads and move as freely, so I think it's going to be up to the president. The president authored just the static position or strikes that would allow the Iraqi military to begin to push back towards mosul and to begin to retake those areas that Isis is controlling now. So many questions as this story continues to develop. Colonel, thank you. .

This transcript has been automatically generated and may not be 100% accurate.

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