Sen. Hillary Rodham Clinton said yesterday that protecting the freedom to practice religion throughout the world is one of the most important missions of U.S. foreign and domestic policy. But the New York Democrat, in a speech last night on religious liberty and church-state relations, said that goal must include trying to "create a space for nonbelievers" as well. "As we hold up the importance of religious liberty, we have to take both words in that phrase to heart: religion and liberty," she said. "I think the outpouring of affection and appreciation for John Paul II is a reflection of...