As Secretary of State Powell summarized in his February 5, 2003 presentation to the U.N. Security Council, "the facts and Iraq's behavior show that Saddam Hussein and his regime are concealing their efforts to produce more weapons of mass destruction." On February 11, 2003, FBI Director Robert Mueller testified to Congress that "Iraq has moved to the top of my list. As we previously briefed this Committee, Iraq's weapons of mass destruction program poses a clear threat to our national security, a threat that will certainly increase in the event of future military action against Iraq. Baghdad has the capability and, we presume, the will to use biological, chemical, or radiological weapons against US domestic targets in the event of a US invasion." On April 10, 2003, White House press secretary Ari Fleischer reiterated that, "But make no mistake—as I said earlier—we have high confidence that they have weapons of mass destruction. That is what this war was about and it is about. And we have high confidence it will be found." Despite the Bush Administration's consistent assertion that Iraqi weapons programs justified an invasion, former Deputy Secretary of Defense Paul Wolfowitz later cast doubt on the Administration's conviction behind this rationale by saying in a May 2003 interview: "For bureaucratic reasons, we settled on one issue—weapons of mass destruction—because it was the one reason everyone could agree on."