PARIS (Reuters) - France said Wednesday that national carrier Air France had canceled three U.S.-bound flights from Paris due to security concerns. The French interior ministry said the flights were canceled at the request of the U.S. embassy in Paris. The United States is on a heightened state of alert ahead of Christmas and the Washington Post reported that foreign airlines were under particular scrutiny. An Air France spokeswoman confirmed that a flight due to leave Paris at 1235 GMT for Los Angeles had been grounded "for security reasons." The French prime minister's office said the cancellations had been prompted...