(CNN) -- More than 11 years after the start of the war in Afghanistan, there is some cause to celebrate and some reason to worry. But more than anything, maybe, there are questions. Those questions were on display Friday as Presidents Barack Obama and Hamid Karzai met in Washington to discuss the future of Afghanistan and the United States' role there. Some celebration is justified. Osama bin Laden is dead. Al Qaeda in Afghanistan is gasping for air. Before the United States invaded in 2001, the Taliban forbade women to even come out of their homes. Now women have more freedom -- more than 2 million girls are going to school. More than 300,000 Afghan children who live in the country are on Facebook.
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NEW: The two presidents agree to accelerate the military transition
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The White House has floated the idea of leaving no troops in Afghanistan after 2014
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Questions include who will follow Karzai and how much it will cost
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Polls show a low level of interest in the war among Americans
Afghanistan
Afghanistan
Afghanistan
Afghan
Afghanistan
@placeholder forces will take the lead in combat missions throughout the country starting in spring, instead of midyear as was previously expected.
Barack Obama
Because the country has a constitution and a working government, it's likely that at least some of the points he and @placeholder agree to could be carried out when he's out of power.
Hamid Karzai
Karzai
So far, who would run for president after @placeholder is unclear, though some intriguing names have been bandied around.
Barack Obama
Last May, @placeholder made a surprise visit to Afghanistan, where he gave a speech about the end of the war.
Taliban
He said, "We're pursuing a negotiated peace" with the @placeholder.
Al Qaeda
To be clear, @placeholder and the Taliban are two different entities, though there are ties.
Taliban
To be clear, al Qaeda and the @placeholder are two different entities, though there are ties.
Al Qaeda
The Taliban has provided shelter and support to @placeholder.