UPDATE: Former Japanese Prime Minister Yukio Hatoyama denied having made comments criticizing the IAEA when he was in Iran during a press conference Monday night upon his return from Tehran. The ex-prime minister said it was a fabrication.

Iran's foreign minister asked former Prime Minister Yukio Hatoyama to "trust" him, when assuring the ex-premier that Tehran has no plans to develop nuclear weapons during Mr. Hatoyama's much-criticized trip to Iran over the weekend, national broadcaster NHK reported.

Few...