Americans are growing weary of the country's many security commitments overseas and increasingly feel that U.S. allies need to do a better job of taking care of themselves. And while more support a long-term military presence in South Korea than in Afghanistan or Iraq, most Americans feel U.S. forces should not get involved in conflict between South and North Korea.Those are among the conclusions of a recent poll taken by the Chicago Council on Global Affairs that examined attitudes toward the U.S. military presence around the world.It found growing hostility to permanent U.S. bases overseas, compared with the previous survey conduced in 2008. Support for long-term bases in Afghanistan dropped 5 points to 52 percent. Only half of Americans (50 percent) now support bases in Iraq, down 7 points from 2008. And fewer Americans regarded countries like Saudi Arabia, Pakistan and Britain as "very important" to the United States.By contrast, support for the Korean bases remained steady at 62 percent, with 36 percent opposing them. But there's great reluctance among Americans to get drawn into military hostilities between the two Koreas.