About 100 Iranian university students protested on Friday (February 9) in front of the Swiss embassy in Tehran against what they saw as recent threats made by the United States towards Iran. Riot police were deployed to the Swiss embassy, which now handles American affairs in Iran, as the US embassy was closed down after the hostage crisis in 1979. "We are here to show that we are staying on our Imams and revolutions goal. And America's and Israel's threats never will frighten us and threaten us," Fatemeh Hassani, a university student said at the protest. The protest occurred as the U.N. nuclear watchdog director urged Iran and the West to avoid "an uncontrolled chain reaction" towards conflict as he prepared for short-notice talks on Friday with Iran's national security chief. Ali Larijani will meet International Atomic Energy Agency chief Mohamed ElBaradei en route to Germany, where he will see senior EU officials, the first such contact since Iran was hit with UN sanctions in December over disputed nuclear activity. ElBaradei has appealed to both sides to take a simultaneous "time out", with Tehran suspending enrichment of uranium for nuclear fuel and major powers their steps to carry out sanctions, to allay fears of a slide into a U.S.-Iran war. Iran's top authority, Supreme Leader Ayatollah Ali Khamenei, said on Thursday (February 8) the Islamic Republic would target U.S. interests around the world if it came under attack over its disputed nuclear programme. His comments came as an Iranian naval commander said Revolutionary Guards had test fired missiles that could sink "big warships" in the Gulf, the waterway where a second U.S. aircraft carrier is now heading. The White House said it did not see that as a direct assault on U.S. ships. US President George W. Bush denies any intent to invade Iran, despite ratcheting up the U.S. military presence in the Gulf region.