Defense Secretary Chuck Hagel, left, and Army Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, appear before the Senate Armed Services Committee, the first in a series of high-profile Capitol Hill hearings that will measure the president's ability to rally congressional support for President Barack Obama's strategy to combat Islamic State extremists in Iraq and Syria, in Washington, Sept. 16, 2014. (AP Photo/J. Scott Applewhite)
Defense Secretary Chuck Hagel, left, and Army Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, appear before the Senate Armed Services Committee, the first in a series of high-profile Capitol Hill hearings that will measure the president's ability to rally congressional support for President Barack Obama's strategy to combat Islamic State extremists in Iraq and Syria, in Washington, Sept. 16, 2014. (AP Photo/J. Scott Applewhite) AP
Defense Secretary Chuck Hagel, left, and Army Gen. Martin Dempsey, chairman of the Joint Chiefs of Staff, appear before the Senate Armed Services Committee, the first in a series of high-profile Capitol Hill hearings that will measure the president's ability to rally congressional support for President Barack Obama's strategy to combat Islamic State extremists in Iraq and Syria, in Washington, Sept. 16, 2014. (AP Photo/J. Scott Applewhite) AP

World

September 16, 2014 6:48 PM

War on Islamic State will be long and difficult, top defense officials tell Senate

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