A new video surfaced Tuesday that appears to show the brutal execution of Steven Sotloff at the hands of ISIS.
The video includes a direct warning to President Barack Obama, telling him, "Just as your missiles continue to strike our people, our knife will continue to strike the necks of your people."
Last week, President Obama said the U.S. does not "yet" have a strategy to deal with ISIS in Syria. Administration officials say ISIS poses a "very serious threat to the homeland."
British Prime Minister David Cameron announced a series of measures to combat the threat of ISIS within the U.K.
Where is the President's strategy?
OutFront, Democratic Congressman Chris Van Hollen.
Video released by the terror group ISIS appears to show the beheading of a second American journalist, 31-year-old Steven Sotloff.
CNN's Alina Machado hears from those who knew him.
The FBI is investigating how nude photos of actresses like Jennifer Lawrence and Kirsten Dunst ended up online for the world to see.
Many of the pictures appear to have been stored on Apple's i-Cloud storage system.
How did this happen and could it happen to you?
CNN's Dan Simon has more.
ISIS released video Tuesday, of what appears to be the gruesome execution of 31-year-old American journalist Steven Sotloff. He is the second American in just thirteen days after another American James Foley was beheaded by the same terrorist group.
We see a masked executioner, speaking in a British accent making a direct threat against the United States.
OutFront, Rita Katz is the person who first obtained the gruesome beheading video. she's the co-founder of the Search for International Terrorist Entities Intelligence Group. Bob Baer is a Former CIA Operative.
An American missionary doctor working in Liberia has tested positive for the deadly Ebola virus.
The director of the Center for Disease Control told CNN the Ebola outbreak is "spiraling out of control," just before briefing President Obama on the crisis Tuesday.
Meanwhile, tests began Tuesday of an experimental vaccine to fight the epidemic.
OutFront, the Director of the National Institute of Allergy and Infectious diseases, Doctor Anthony Fauci.