Could popular uprising in Tunisia spread to other Arab states?

The World
Tunisia's army clashed with armed gangs in Tunisia's capital on Sunday, two days after a popular uprising forced long-time dictator, President Zine El Abidine Ben Ali, to flee the country. Popular support for Tunisians' freedom is echoing across the Arab world. Anthony Shadid, a foreign correspondent for The New York Times, has reported from most countries in the Middle East over his fifteen year career. He says that the Arab world is facing its most dangerous and yawning divide between ruler and ruled.