U.S. officials have confirmed the authenticity of a video showing the beheading of the American journalist.
Foreign policy is the focus of Monday’s third and final presidential debate between President Barack Obama and Republican Mitt Romney.
The questions are expected to range from the war in Afghanistan, tensions between between Iran and Israel, the rise of China and what happened in Benghazi.
Analysts say President Obama and Mitt Romney share some views key foreign policy issues, like the 2014 withdrawal of American troops from Afghanistan.
But both candidates are likely to focus on their differences in the debate, starting with their very different views of how to implement U.S. foreign policy goals.
How do their foreign policy stances stack up to the realities on the ground, in Iran, China and Syria?