U.S. Secretary of State Hillary Rodham Clinton has told college students in Saudi Arabia that if Iran gets a nuclear weapon it could trigger a nuclear arms race in the Middle East.
Clinton says that could in turn create problems that she termed "quite dangerous."
She spoke at a college in Jeddah called Dar al-Hekma, which translates in English to "House of Wisdom."
Her appearance at the all-woman college was highly unusual in a conservative Muslim nation.
Saudi law bars women from voting, except for chamber of commerce elections in two cities in recent years, and no woman can sit in the kingdom's Cabinet. Women also cannot drive or travel without permission from a male guardian.
Clinton was winding up a three-day Persian Gulf visit that began Sunday in Qatar and continued in the Saudi capital of Riyadh on Monday. She was returning to Washington later Tuesday.