Iran says will not discuss second nuclear plant

TEHRAN/WASHINGTON (Reuters) - Iran said on Tuesday it would not discuss a previously secret nuclear plant at international talks this week but Washington vowed to bring it up and demanded Tehran prove it is not developing an atomic weapon.

White House spokesman Robert Gibbs, asked about Iran's insistence it would not discuss the facility in the Geneva talks, declared: "They may not, but we will."

Iranian officials and representatives of six major powers, including the United States, China and Russia, will hold talks on Tehran's nuclear ambitions in Geneva on Thursday. It is the first such encounter since U.S. President Barack Obama took office early this year promising more active U.S. diplomacy.

Ali Akbar Salehi, head of Iran's Atomic Energy Organization, made clear that Iran feels the newly disclosed uranium enrichment plant is off-limits for discussion...