About 1,500 protesters converged on a U.S. Air Force base near Athens airport to protest the American military presence in Greece. "Out with the Americans--people don't want you here," the crowd shouted. Demonstrators blocked traffic and painted anti-American slogans. They demanded that the United States close its four military bases in Greece when the installations' current operating agreement expires at the end of this year. Prime Minister Andreas Papandreou's Socialist government has already begun talks with U.S. officials about a new operating agreement.