By Parisa Hafezi and Angus McDowall DUBAI/LONDON, June 15 - Iran's theocratic rulers have seen off a U.S. military campaign but their real problems may be about to begin: managing the competing demands of hardliners buoyed by surviving the onslaught and those of an impoverished, angry people. Iran's powerful hardliners are energized by a three-month confrontation they feel Iran has won.