In the wake of the disclosure of Iran's secret nuclear facility, President Obama, French President Nicolas Sarkozy, and British Prime Minister Gordon Brown opened the G-20 economic summit Friday with some tough talk aimed at Tehran. "Iran is breaking rules that all nations must follow," Obama said, while Brown accused Iran of "serial deception," and Sarkozy said Iran must comply by December or face international sanctions. "Everything, everything must be put on the table now," Sarkozy said. The U.S. has been tracking the covert project for years, but Obama reportedly decided to make findings public after Iran recently discovered Western intelligence agencies had breached the secrecy surrounding the project. At the summit Friday morning, Obama called the newly revealed uranium enrichment facility "inconsistent with a peaceful [nuclear] program" and asked Iran to "take concrete steps" to show its willingness to comply with its international obligations. Iran's president remained defiant. "This does not mean we must inform Mr. Obama's administration of every facility that we have," he said.