Hillary Clinton, shown here boarding a plane in Prague earlier this month, is preparing to step aside soon as secretary of state. She hasn't said what she plans to do next.
U.S. Sen. John Kerry (left), who was nominated Friday to be secretary of state, is shown shaking hands with Pakistani Prime Minister Yousuf Raza Gilani during a trip to Pakistan last year.
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U.S. Secretary of State Hillary Clinton delivers a speech at Dublin City University in Ireland on Thursday. She also met with Russian Foreign Minister Sergei Lavrov to discuss Syria.
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