Iran Ready to Provide Nuke 'Guarantees' TEHRAN, Iran - Iran is ready to provide "guarantees" it won't seek nuclear weapons, President Mohammad Khatami said Saturday, urging the United Nations' nuclear watchdog agency to close its investigation into the country's program when it meets next month.    The United States, which says Iran is trying to develop weapons, is pushing the International Atomic Energy Agency to refer Tehran to the U.N...