US President Barack Obama wraps up a two-day visit to Turkey after reaching out to Muslims with a speech to university students in Istanbul

US President Barack Obama has landed in Baghdad on an unannounced visit. The White House said he would meet US commanders and troops and talk to Iraqi leaders by phone. He flew to Iraq from Turkey, where he wrapped up a two-day trip to the country with a town-hall meeting with college students in Istanbul, and some sightseeing.