The city of Rome's decision to launch a festival of its own just two months after the venerable Venice Film Festival, which opens its 63rd showing on Wednesday, has erupted into a full-blown spat that mirrors centuries-old rivalries between the Eternal City and the Most Splendid Republic. A gentlemanly truce broke this week when the director of the Venice Film Festival gave an interview saying the nascent Rome festival was performing a service to films overlooked by Venice and Cannes by giving them a venue. Colleen Barry reports.