John O. Brennan

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John O. Brennan answers questions from senators Thursday about drones, media leaks and other matters during his confirmation hearing to be CIA director. (Andrew Harnik/The Washington Times)

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John O. Brennan answers questions from senators Thursday about drones, media leaks and other matters during his confirmation hearing to be CIA director. (Andrew Harnik/The Washington Times)

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John O. Brennan answers questions from senators Thursday about drones, media leaks and other matters during his confirmation hearing to be CIA director. (Andrew Harnik/The Washington Times)

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Anti-war protesters yell and hold signs as John O. Brennan arrives to testify before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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John O. Brennan arrives to testify before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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An anti-war protester is removed as John O. Brennan arrives to testify before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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John O. Brennan (center) arrives to testify before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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Sen. Mark R. Warner (left), Virginia Democrat, arrives to offer introductory remarks for John O. Brennan before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on Mr. Brennan's nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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An anti-war protester is removed as John O. Brennan testifies before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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John O. Brennan returns to a room emptied of spectators to continue his opening remarks, which were interrupted by anti-war protesters as he testified before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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John O. Brennan testifies before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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John O. Brennan testifies before the Senate Select Committee on Intelligence at a hearing on Capitol Hill in Washington on Thursday, Feb. 7, 2013, on his nomination to head the Central Intelligence Agency. (Andrew Harnik/The Washington Times)

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John O. Brennan (right) arrives on Capitol Hill in Washington on Thursday, Feb. 7, 2013, to testify before the Senate Select Committee on Intelligence on his nomination to be director of central intelligence. (Andrew Harnik/The Washington Times)

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Anti-war protesters yell and hold signs as John O. Brennan arrives on Capitol Hill in Washington on Thursday, Feb. 7, 2013, to testify before the Senate Select Committee on Intelligence regarding his nomination to be director of central intelligence. (Andrew Harnik/The Washington Times)

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Anti-war protesters yell and hold signs as John O. Brennan arrives to testify in front of the United States Senate Select Committee on Intelligence at a hearing on his nomination to be Director of the Central Intelligence Agency on Capitol Hill, Washington, D.C., Thursday, February 7, 2013. (Andrew Harnik/The Washington Times)

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President Obama at the White House on Monday formally announced he is nominating John O. Brennan (right) to be director of the CIA and Chuck Hagel to be secretary of defense. Mr. Brennan has served as Mr. Obama’s chief counterterrorism adviser, while Mr. Hagel is a former U.S. senator from Nebraska. (Associated Press)