Obama in Kabul for unnannounced Afghan trip 28 Mar 2010 15:52:14 GMT Source: Reuters * Obama makes first Afghanistan visit as U.S. president * To meet with Karzai, speak to American troops By Jeff Mason KABUL, March 28 (Reuters) - U.S. President Barack Obama arrived in Kabul on Sunday for an unannounced visit to Afghanistan, his first trip to the country since becoming president and commander-in-chief of the U.S.-led war effort. Obama's brief trip was expected to include a one-on-one meeting with Afghan President Hamid Karzai, an expanded meeting with Karzai's cabinet and U.S. officials, and a speech to American...