BAGHDAD – A car bomb exploded on the perimeter of Baghdad’s heavily guarded international airport complex on Sunday, wounding five people, security sources said. The blast occurred at a security checkpoint close to a parking lot where passengers are searched before boarding airport taxis, three sources said. The checkpoint is several kilometers from the terminal building. It was not immediately clear who was responsible for the attack. An airport official said authorities tightened security while air traffic was normal. Around two hours later, a roadside bomb exploded in a commercial area of Baghdad about five kilometers (three miles) from the airport. Three people were killed and seven wounded, said security sources and medics. The United States’ top military officer told American troops on a surprise visit to Baghdad on Saturday that the momentum in the battle with the self-proclaimed Islamic State was “starting to turn,” but predicted a drawn-out campaign lasting several years. – Reuters