"If we don't change our strategy ... there will be another 9/11," Graham said Monday.
VIDEO | Leaders opened Sunday's session by observing a moment of silence.
The Yemeni detainees were sent to the United Arab Emirates.
Putting a large number of U.S. or NATO troops in Eastern Europe would violate a 1997 treaty.
“There’s a 9/11 coming ... from Syria if we don’t disrupt their operations," Graham said.
”It’s time we take real action to confront these monsters," Sen. Dianne Feinstein said.
The Republican senators said there is a "lack of transparency" on the subject.
“I'm surprised that my material is better than theirs," Ben Carson said.
"The Chinese are there," Carson said at the most recent GOP debate.
Unilaterally closing the prison camp might not hold up in court, experts say.
The nature of Army Lt. Gen. Ron Lewis's alleged misconduct is not known.
Terrence McNeil, 25, was charged with one count of solicitation of a crime of violence.
More than 100 trucks were reportedly destroyed.
The Pentagon is close to releasing its plan for shuttering the detention facility.
VIDEO | French fighter jets targeted an ISIS stronghold in Raqqa.
"ISIS aspires to attack us here in the United States as well,” Rep. Adam Schiff said.
"The skies have been darkened by the horrific attacks," he said in Turkey.
The announcement comes a day after terrorist attacks across Paris.
The Pentagon is "reasonably certain" it has killed the terrorist.
Warren said a U.S. drone strike hit a car believed to be carrying "Jihadi John."
"I don't think they're gaining strength," Obama says of the group.
Jihadi John was identified by news reports in February as a middle-class British man.
He's highlighting the controversial project in his "Waste Report."
Some progress has been made in achieving U.S. goals in Syria, he said.