Most Americans feel the Trump administration has not clearly explained the U.S.' goals in the conflict with Iran .  Explanation — or the perceived lack of one — is linked to whether people support it or not. The longer Americans believe the conflict will last, the more they disapprove. Half the country believes it'll be months, or even years before it's over. When they don't think the administration has explained, they think it'll last longer or aren't sure . And perhaps the most immediate view