A major terror group pledges allegiance to ISIS.
Egyptian militants, who until now had been solely fighting their government are taking up the cause. The group calls on "god's chosen fighters" to join what they call the war against Islam.
"In obedience to God and his prophet, who warned against division among his people, we are announcing our allegiance to the Caliphate," militant said in audio recording.
The group is considered Egypt's most dangerous militants. Dissatisfied with al Qaeda, they are now turning to ISIS. The affiliation is expected to provide new money, weapons, and soldiers.
There's also concern the group could adopt ISIS tactics of terrorizing civilians and tourists with indiscriminate killings and beheadings.
Experts say it's a major victory for ISIS in the propaganda war.
But ISIS isn't only gaining support in Egypt. CNN's Jim Sciutto has more on how far ISIS' global reach extends.
Washington (CNN) - Former President George W. Bush said Tuesday that he wanted to publish his personal biography about his father, former President George H.W. Bush, now because "I wanted Dad to be alive - to be able to see how much not only I care for him but a lot of people care for him."
"His presidency in many ways was overshadowed by his predecessor, and that's understandable," Bush said. "[But] people are beginning to reassess the presidency of 41 and I want to be a part of that process and I wanted him to know that process was going to take place."
Bush's comments came at an event with his father Tuesday marking the launch of the 43rd president's personal biography of the 41st president.
The discussion was moderated by former George W. Bush chief of staff Andy Card and held at the George H.W. Bush Presidential Library at Texas A&M University in College Station. It was a heartfelt tribute to the elder Bush, who left the White House 22 years ago and is now 90.
Actor Robin Williams' coroner's report reveals he suffered from a disease called Lewy body dementia. The autopsy report also shows that there was no alcohol or illegal drugs in his system. Lewy body dementia is a disease few have heard of, but an estimated 1.3 million people suffer from.
CNN's chief medical correspondent Sanjay Gupta breaks down the disease.
In Colorado, Harold Henthorn faces federal murder charges for the death of his second wife.
Two years ago, Toni Henthorn plunged to her death during a hiking trip to the Rocky Mountains. Her husband claims the fall was accident.
Now, authorities are taking a closer look at the death of his first wife, who died in a freak accident 17 years earlier.
Anna Cabrera is OutFront in Denver with the latest on the case against Harold Henthorn.
Plans are being finalized to prepare Ferguson for what might come from the grand jury's decision on whether to charge Officer Darren Wilson for the shooting death of 18-year-old Michael Brown.
The state's governor along with leaders from Missouri's law enforcement agencies made it clear that they will not tolerate a repeat of the violence and looting that erupted in the days and weeks that followed Brown's death three months ago.
Governor Jay Nixon said he's willing to call the National Guard to Ferguson if necessary. The state is also preparing itself with new riot gear to fight back against protesters who defy the law.
Sara Sidner has more OutFront in Ferguson, Missouri.