Slain journalist's family accuses ISIS leader of violating Islam with executionBy Chelsea J. Carter and Faith Karimi, CNN Updated 8:24 AM ET, Thu September 4, 2014Just WatchedSpokesman: Steven was no war junkiereplayMore Videos ...Spokesman: Steven was no war junkie 03:09Story highlightsEffort to defeat ISIS will take time and go beyond this administration, official says "We will not allow our enemies to hold us hostage," the Sotloff family saysThe U.S. goal is to "degrade and destroy" ISIS, U.S. defense secretary says ISIS video released Tuesday shows second beheading of a U.S. journalist in two weeksThe family of American Steven Sotloff had a message Wednesday for the notorious leader of the terror group ISIS, asking him to answer for the sin he committed with the beheading of the journalist. Sotloff's family broke its silence the same day U.S. intelligence officials said the videotaped execution was authentic."I have a message for Abu Bakr al-Baghdadi," family spokesman Barak Barfi told reporters in Arabic, reading from a statement. "Where is your mercy?" "Wayluk," Barfi said, using an Arabic phrase that roughly translates to committing a great sin.The statement went on to cite passages from the Quran, asking al-Baghdadi why he violated the tenets. Just WatchedFriend: Sotloff was there for the peoplereplayMore Videos ...Friend: Sotloff was there for the people 03:42PLAY VIDEOJust WatchedColleague: Sotloff was very dedicated replayMore Videos ...Colleague: Sotloff was very dedicated 02:14PLAY VIDEOJust WatchedTroops deployed after ISIS video releasereplayMore Videos ...Troops deployed after ISIS video release 01:54PLAY VIDEO"I am here debating you with kindness. I don't have a sword in my hand, and I am ready for your answer," according to the statement read by Barfi.In English, Barfi told reporters gathered outside the Sotloff family's home in Miami: "Today, we grieve. This week, we mourn. But we will emerge from this ordeal ... We will not allow our enemies to hold us hostage with the sole weapons they possess, fear."'We will not forget'The statement came just hours after President Barack Obama said the United States will not be intimidated by the killers of two American journalists. "Those who make the mistake of harming Americans will learn that we will not forget ... that our reach is long and that justice will be served," Obama said during a news conference in Estonia, where he was meeting with leaders of the Baltic nations. The killing is the second beheading of an American journalist in two weeks, and the militant group said it's a result of Obama's decision to conduct airstrikes in Iraq against ISIS, which calls itself the Islamic State.The goal of the United States is to "degrade and destroy" the capabilities of ISIS in Iraq and Syria, "it's not contain," Defense Secretary Chuck Hagel told CNN's Jim Sciutto."It makes you sick to your stomach, but it again reminds you of the brutality and barbarism that is afoot in some places in the world," Hagel said. "... It won't just recede into the gray recesses of history until we stop it."Journalists most at riskHagel: Options on the tableAll options -- with the exception of a ground invasion -- are on the table to address the threat posed by ISIS, Hagel said. Those options include possible airstrikes in Syria, where ISIS has established a stronghold in and around the northeastern city of Raqqa. But there is a question of just how long it will take to defeat ISIS.Just WatchedAnalysis of the ISIS beheading videosreplayMore Videos ...Analysis of the ISIS beheading videos 02:23PLAY VIDEOJust WatchedObama: 'Our country grieves'replayMore Videos ...Obama: 'Our country grieves' 01:37PLAY VIDEOJust WatchedISIS blames Obama for Sotloff beheadingreplayMore Videos ...ISIS blames Obama for Sotloff beheading 00:34PLAY VIDEO"This, as the President has said, is going to have to be a sustained effort. And it's going to take time, and it will probably go beyond even this administration to get to the point of defeat," Deputy National Security Adviser Tony Blinken told CNN's Wolf Blitzer. Vice President Joe Biden added his own voice to the calls for justice, saying the United States will pursue the killers "to the gates of hell.""As a nation, we are united, and when people harm Americans, we don't retreat, we don't forget," he said at an appearance near Portsmouth, New Hampshire."We take care of those who are grieving. And when that's finished, they should know we will follow them to the gates of hell until they are brought to justice, because hell is where they will reside. Hell is where they will reside."The videoThe video of Sotloff's execution was posted online Tuesday. In a scene eerily similar to an earlier video of the death of U.S journalist James Foley, Sotloff kneels in the desert, dressed in an orange prison-style jumpsuit. A masked "executioner" lords over him, wielding a knife."I'm back, Obama, and I'm back because of your arrogant foreign policy toward the Islamic State," the executioner says. "Just as your missiles continue to strike our people, our knife will continue to strike the necks of your people."The executioner appears to be the same person, and the location of the two killings appears to be similar, probably in or around Raqqa, one of the safest areas for ISIS, said Peter Neumann, a professor at King's College London."It is almost the exact same choreography," Neumann said.The journalist speaks; the executioner speaks. Then the victim is beheaded.In the video released Tuesday, a British hostage is shown after the beheading of Sotloff, just as Sotloff was shown in Foley's video.British rescue attemptThe UK said it attempted to rescue one of its citizens held by ISIS "some time ago" but failed. Just WatchedMarie Harf: ISIS shows barbarismreplayMore Videos ...Marie Harf: ISIS shows barbarism 01:50PLAY VIDEOJust WatchedISIS recruits young children in video replayMore Videos ...ISIS recruits young children in video 01:37PLAY VIDEOJust WatchedISIS and religious justificationreplayMore Videos ...ISIS and religious justification 03:41PLAY VIDEOUK Foreign Secretary Philip Hammond provided scant details of the rescue attempt or any other plans in the works. "You wouldn't expect me to discuss various options that we will be considering," he said. "But I can assure you that we will look at every possible option to protect this person." Britain echoed the same sentiment as Obama."This country will never give into terrorism ... a country like ours will not be cowed by these barbaric killers," Prime Minister David Cameron said. This summer, several dozen of the most elite U.S. commandos flew into Syria but couldn't find the hostages, including Sotloff and Foley, a U.S. official told CNN last month.'Degrade and destroy'Speaking Wednesday, Obama addressed his much-criticized statement last week that he has no strategy on ISIS. He said he was referring to a military strategy in Syria that "might" require congressional approval. "Our objective is clear. That is to degrade and destroy (ISIS) so it's no longer a threat," he said. "We can accomplish that. It's going to take some time, it's going to take some effort."Obama said the world needs a regional strategy to defeat the group."We've been putting together a strategy that was designed to do a number of things. ... What we have to make sure is we have a regional strategy in place," he said. How will Obama respond to ISIS?Remembering Steven SotloffMaps: Where do jihadis come from?ISISISIS governor killed in airstrikes The latest ISIS-appointed governor of Mosul was killed in coalition airstrikes on Christmas Day, according to Iraqi police. Author's journey inside ISISAuthor Juergen Todenhoefer says ISIS are "more dangerous than people realize."The Pentagon has a new name for ISISThere's yet another new name for ISIS among those fighting against the terror group. Daesh. FBI warns military of ISIS threatThe FBI warns U.S military that ISIS are looking for individuals who may be interested in carrying out attacks on home soil.Iraqi army's 'ghost' soldiersIraq's Prime Minister says there is evidence of 50,000 soldiers being paid while inactive.Pentagon insider may lead war on ISISPentagon insider Ashton Carter is expected to be President Barack Obama's nominee for Defense Secretary.U.S. seeks strategy reviewWolf Blitzer talks to Rep. Ed Royce about the White House's new ISIS strategy that involves removing Bashar al-Assad.Child fighter tormented by ISIS Just two weeks ago, Yasir was regularly strapped into an explosive vest and handed guns and a radio to stand guard at an ISIS base in Syria.Jihadi Janes try to join ISISHow did three U.S. teenagers become radicalized? CNN's Pamela Brown reports.Why is ISIS so attractive to recruits?Reza Aslan examines the appeal of ISIS and why the group is able to successfully attract so many recruits.This is how ISIS indoctrinates kids CNN's Nick Paton Walsh takes a look at how ISIS is using media to desensitize children. Travel ad or pro-ISIS video?A new propaganda video from ISIS features a Canadian ISIS member who died in combat.ISIS: Everything you need to knowExplore CNN's interactive that explains ISIS' roots, what it controls, and where its support comes from.More from middleeastHow ISIS' new hostage strategy is shifting the goalpostsISIS launches attack on oil-rich northern Iraqi city of KirkukWho is Jordanian pilot Moaz al-Kassasbeh, captured by ISIS?