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WASHINGTON Oct 27 U.S. President George W.
Bush said on Friday he was aware of "speculation" that Iran has
started enriching uranium in a second network of centrifuges
and said it was unacceptable for Tehran to have a nuclear
"It says to me that we must double our effort to work with
the international community to persuade the Iranians that there
is only isolation from the world if they continue working
forward on such a program," Bush told reporters during a
meeting with NATO Secretary General Jaap de Hoop Scheffer.
"I've read the speculation that that's what they may be
doing. But whether they doubled it or not, the idea of Iran
having a nuclear weapon is unacceptable," Bush added.
Iran's student news agency ISNA reported that Iran had
started a second centrifuge network, expanding a program which
the West fears is intended to make nuclear bombs. Iran denies
plans to make weapons and says its nuclear program is for
peaceful energy purposes.