Now we turn to the crisis in Iraq. President Obama addressing the situation on Monday saying U.S. Air tries have help Iraqis score a big victory over Isis. They renew threats against the U.S. ABC's... See More
Now we turn to the crisis in Iraq. President Obama addressing the situation on Monday saying U.S. Air tries have help Iraqis score a big victory over Isis. They renew threats against the U.S. ABC's Jon Karl is at the white house and the president says this military action against these islamic militants is a limited campaign. Could this be a sign of something larger? Reporter: It sure could, Lara. In fact, we have seen the campaign of air tries in Iraq increase significantly over the last few days. 35 air strikes in just 72 hours and while the president continues to promise very emphatically that there will be no ground troops introduced in Iraq, yesterday he also said that he couldn't put an end date on this military operation really preparing Americans for the possibility that this military campaign of air strikes, and air strikes only, could go on for a long time. No end date and then also these threats from Isis to attack on American soil. What do you know about this? Reporter: Well, we've seen a lot of threats from Isis increasing in recent days. We saw it not long ago. They threatened to raise the black flag of Isis over the white house. We've seen more specific threats. Just in the last several hours. This is really why the united States got involved because ultimately this terrorist group represents a threat to the west and a threat to the united States, in fact, Lara, this as you hear many intelligence analysts say could be the most well funded, well armed terrorist group we have ever seen. All right, Jon Karl, thank you very much.
This transcript has been automatically generated and may not be 100% accurate.