By Evan Perez
FBI Director James Comey told a Senate hearing on Thursday the agency considers the investigation of the deadly Benghazi terror attack among its "highest priorities."
In response to questions from Sen. Kelly Ayotte, R-New Hampshire, Comey said the FBI still has "a lot of people working very, very hard on this. We are committed bringing to justice those responsible for the attack and the murder of our folks.
"These are often difficult cases to make, but as you've seen for our work, we never give up and we will never rest until we bring to justice the people responsible," he said.
Ambassador Christopher Stevens and three other Americans were killed in the armed assault on the U.S. diplomatic compound in eastern Libya in September 2012.
By Jamie Crawford
Additional sanctions targeting Iran's disputed nuclear program could undermine international progress already made on the issue, President Barack Obama said Thursday.
"If we're serious about pursuing diplomacy then there's no need for us to add new sanctions on top of the sanctions that are already very effective, and that brought them to the table in the first place," Obama told reporters at the White House.
Obama said he would like to see if a "short-term, phase-one deal" with Iran can be put in place in the near term that requires Tehran to freeze aspects of its nuclear program while the international community negotiates a more comprehensive long-term deal.