PARIS (Reuters) - Democratic presidential candidate Barack Obama told a French magazine in an interview that if he wins office, he will hold a summit with Muslim countries to better the United States' image in the world. "Once I'm elected, I want to organize a summit in the Muslim world, with all the heads of state, to have an honest discussion about ways to bridge the gap that grows every day between Muslims and the West," Thursday's edition of Paris Match quoted Obama as saying,