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(NECN/NBC News: Brian Mooar) - Embattled U.N. Ambassador Susan Rice went to Capitol Hill Tuesday to explain what she knew - and now knows - about the deadly attack on the U.S. Consulate in Libya, but she failed to silence her Republican critics.
"All I can tell you is that concerns I have today are greater today than they were before, we're not even close to getting the basic answers," said Republican Sen. Lindsey Graham.
Rice was accompanied by acting CIA Director Michael Morrell, who helped explain flawed talking points Rice repeated in talk show appearances days after the attack.
In a statement on Tuesday, Rice said, "While, we certainly wish that we had had perfect information just days after the terrorist attack, as is often the case, the intelligence assessment has evolved."
"She said what she believed was true, and she was under no political influence from the White House," said Sen. Joe Lieberman.
However, Republicans aren't buying it.
"We are significantly troubled by many of the answers that we got and some that we didn't get," Sen. John McCain.
Rice is also defending her own potential nomination as Secretary of State. The White House says the focus on Rice is about Washington politics, not the attack in Libya.
"People are more interested in the talking points for a Sunday show several months ago than they are in finding out what happened in Benghazi," said White House Press Secretary Jay Carney.
That attack in Libya now the front line for a political battle on Capitol Hill.