Now to the urgent fears of a handful of American families this morning. Their loved ones being held hostage by Isis. The jihadist group that beheaded James Foley. With Foley's brother now saying the... See More
Now to the urgent fears of a handful of American families this morning. Their loved ones being held hostage by Isis. The jihadist group that beheaded James Foley. With Foley's brother now saying the white house didn't do enough to save him, the administration is hinting it may now expand the fight against Isis and ABC's Jon Karl is with the president on Martha's vineyard this morning. Jon, good morning to you. Reporter: Good morning, Dan, the white house is now calling the killing of James Foley a terrorist attack on the united States as the president is weighing options to step up the fight against Isis. U.s. Warplanes hit Isis targets near Iraq's mosul dam Friday even as the terrorists who executed Jim Foley are threatening to kill more American hostages in retaliation. U.s. Officials tell ABC news the group is holding at these flee Americans including Steven sotloff who Isis threatened to kill next in the video it posted earlier this week. In an interview with Katie couric Foley's siblings talk about the last hate-filled e-mail the family received from his captors saying "Today our swords are unsheathed towards you, government and citizens alike and will not stop until we quench our thirst for your blood quote. I don't understand where that type of hate comes from. Reporter: His brother said the U.S. Did not do enough. The United States could have done more on behalf of the western and American hostages over there and still dealt with the broader worldwide issues. I can assure you that we have done everything that we can possibly do to try to bring home our hostages. Tragically we weren't able to rescue Mr. Foley. But we're going to keep tryinging for all of our hostages. Reporter: The one thing the government won't do is pay ransom. The U.S. Government stays committed to the notion we will not fund terrorist organizations. Reporter: They have paid $165 million to terrorist groups since 2008. Well, all U.S. Air strikes so far and there have been 93 of them over the past two weeks have been on Isis targets in Iraq. The president is now considering hitting Isis targets in Syria, as well as one of his top advisers said, Paula, we're not going to be restricted by borders. All right, Jon Karl with the president today, thank you very much, Jon.
This transcript has been automatically generated and may not be 100% accurate.