(ANSA-AFP) - WASHINGTON, FEB 4 - The United States issued a joint statement with France, the United Kingdom and Germany on Friday criticizing Iran's "inadequate" response to an International Atomic Energy Agency (IAEA) report on its nuclear program. The UN nuclear watchdog issued a warning to Tehran on Wednesday after it found that changes had been made without prior notification at the Fordo Fuel Enrichment Plant to equipment that can enrich uranium to up to 60 percent. Iran claimed that an IAEA inspector had accidentally flagged the changes as being undeclared, and that the matter was later resolved. "Iranian claims that this action was carried out in error are inadequate," the joint statement said. "We judge Iran's actions based on the impartial and objective reports of the IAEA, not Iran's purported intent." (ANSA-AFP).