U.N. Secretary-General Kofi Annan on Thursday was trying to settle a flap over a potentially damaging claim made earlier in the day by Iranian President Mahmoud Ahmadinejad. Ahmadinejad said Annan had told him Iran could ignore a Security Council resolution requiring the country to cease enriching uranium by Aug. 31 or face economic sanctions. The Security Council sought the resolution in the face of rising fears over Iran's possible moves toward building nuclear weapons: Uranium enrichment is one of the key factors in that process. But in its most recent report, the United Nations nuclear watchdog, the International Atomic Energy...