(CBS/AP) RIYADH, Saudi Arabia - U.S. Secretary of State Hillary Rodham Clinton says Iran and six world powers have agreed to meet in Istanbul on April 13 for the latest round of talks about Iran's nuclear program.
Clinton made the announcement at a news conference Saturday following a security conference in Saudi Arabia. That conference focused on the nuclear program, which the U.S. and other believe is intended to develop nuclear weapons, and on military threats from Iran in the Persian Gulf region.
Iran and the six nations the United States, Britain, France, Germany, Russia and China met in Istanbul 14 months ago. But the talks ended after two days with the sides agree on what to talk about.
Iran contends the program is solely for peaceful energy and research purposes.
Clinton made clear Saturday that time is running out for diplomacy with Iran over its disputed nuclear program, saying Tehran's "window of opportunity" for a peaceful resolution "will not remain open forever."
She also expressed doubt about whether Iran has any intention of negotiating a solution that satisfies the U.S., Israel and other countries that believe Iran is trying to develop nuclear weapons.
Her remarks at a security conference in Saudi Arabia follow President Barack Obama's announcement Friday that the U.S. was moving ahead with penalties aimed at depriving Iran of oil revenue, while also working with Saudi Arabia and other Persian Gulf states to ensure ample global petroleum supplies.
Clinton prodded Gulf governments to develop a coordinated defense strategy against Iranian missiles. With tensions rising in the region, she said American and Gulf militaries should cooperate to improve maritime security as well.
Underscoring the limits of U.S.-Gulf cooperation, however, U.S. officials confirmed Saturday that the United Arab Emirates had shut down an American-funded democracy group, following similar Emirates action against a German organization this past week.
Discussions also covered ways to pressure Syrian President Bashar Assad to end a year of bloodshed from the uprising against his rule, but the focus was on Iran.
"It soon will be clear whether Iran's leaders are prepared to have a serious, credible discussion about their nuclear program, whether they are ready to start building the basis of a resolution to this very serious problem," Clinton told reporters. "It is up to Iran whether they are ready to make the right choice. ... What is certain is that Iran's window of opportunity to seek and obtain a peaceful resolution will not remain open forever."
She said pressure from the economic penalties and international isolation was increasing on Iran to show it is serious about satisfying the world's concerns.