The European Union is demanding that Iran share with the U.N. atomic agency full details of its manufacture of parts for machines that could be used to make the core of nuclear arms, in a statement reflecting its concern over the sensitive issue.

The draft statement was seen by The Associated Press Friday, ahead of its planned delivery next week at a board meeting of the U.N.'s International Atomic Energy Agency and a week after the agency reported that Iran started making rotor tubes for centrifuges in June.

It demands the "full cooperation of Iran" on the issue in talks with the IAEA and calls for updates from the agency to the 35-nation IAEA board.