Published: May 01, 2012 8:04 PM EDT
Updated: May 01, 2012 8:57 PM EDT

KABUL, Afghanistan (AP) - In an unannounced trip, President Barack Obama has arrived in Afghanistan to sign an agreement cementing the U.S. role in the country after the war ends in 2014.
    
Obama and Afghan President Hamid Karzai are to approve the agreement before Obama gives a speech on the war effort for a TV audience back in the United States.

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