President Barack Obama and Republican presidential nominee Mitt Romney mainly focused on foreign policy at a private lunch Thursday at the White House, officials said. The two candidates focused their talks on “America’s leadership in the world and the importance of maintaining that leadership in the future,” a White House spokesman said. “They pledged to stay in touch, particularly if opportunities to work together on shared interests arise in the future,” the spokesman said in a statement. The private lunch lasted for an hour. The menu included white turkey chili and Southwestern grilled chicken salad.