Four experts discuss what the U.S. options are for addressing the Syria crisis, with suggestions ranging from avoiding direct actions to enforcing a Libya-style no-fly zone.

A UN Security Council resolution calling for Syria's President Assad to step down faces stiff Russian opposition. Expert Andrew Tabler examines Russia's motives, Syria's internal fissures, and the prospects for ongoing violence.

With Bashar al-Assad's government thumbing its nose at global anger as it continues a violent crackdown on protesters, the international community should step up pressure and invoke tough sanctions against Syria's oil exports, says expert Andrew Tabler.

Syria's Assad dynasty appears to be on a long path to collapse, posing new challenges to the Obama administration's efforts to break the axis of Iran, Syria, and Hezbollah, says expert Andrew Tabler.