President Obama makes unannounced visit to Afghanistan - latimes

The trip, kept secret until Obama was on the ground, was his first to the country as president. He meets with Afghan leader Hamid Karzai to discuss government corruption, benchmarks of progress. - President Obama makes unannounced visit to Afghanistan

Telegraph.co.uk - CNN - Wall Street Journal
In surprise visit to war zone, Obama prods Afghans - Yahoo! News
YouTube - Obama Makes Surprise Stop in Afghanistan