WASHINGTON – President Barack Obama will set a course Monday for the nation's changing mission in Iraq as the military prepares to end its combat operations there. In a speech at the national convention of the Disabled American Veterans in Atlanta, Obama was to address the progress being made to meet his deadline of drawing down all combat troops by the end of the month. A transitional force of 50,000 troops will remain to train Iraqi security forces, conduct counterterrorism operations and provide security for ongoing U.S. civilian efforts. "Make no mistake: Our commitment in Iraq is changing, from a...