Why? Because we are the United States, and we are used to getting our way. Because when Democrats are in power, they itch to use military force against humanitarian crises. Because Secretary of State Hillary Clinton and UN ambassador Susan Rice are liberal hawks. Because we have a closetful of hammers and everything looks like a nail.
Last week's ceasefire raises hopes that Syrian President Bashar al-Assad will cave in to international pressure and accept democratic reforms. But that's not what ferocious autocrats usually do. More likely he will use every means to hold on to power.
For the moment, the administration is not beating the war drums. Ivo Daalder, U.S. ambassador to NATO, has taken pains to distinguish the Syria situation from the Libya situation.
In Libya, he has noted, we didn't agree to military action until we could cite 1) a demonstrable need (the prospect of mass slaughter), 2) a sound legal basis (a UN Security Council resolution) and 3) regional support.
But that formula is not really an argument against acting in Syria. It's more of a roadmap to intervention.
The "demonstrable need" comes in the form of 9,000 civilians killed by government forces. Regional support for action has already emerged, particularly from Turkey, Saudi Arabia and Qatar.
The legal basis is the hang-up now, since Russia and China could veto a Security Council resolution authorizing action. But they may not protect Assad forever, and NATO just might find a pretext to move even without the UN's endorsement.
In cases like this, it's generally unwise to bet against intervention, no matter how improbable it may sound. When demands arose for the United States to impose a "no-fly" zone in Libya, Defense Secretary Robert Gates and Joint Chiefs Chairman Adm. Mike Mullen publicly disparaged the proposal. The intervention looked unlikely right up to the moment Barack Obama unleashed the aerial onslaught.
During the Balkan conflicts of the 1990s, President Bill Clinton resisted a U.S. combat role year after year. Then he went to war against Serbia -- not once but twice.
Foreign policy observers with long memories can recall when the idea of sending U.S. troops into a civil war in Somalia, or dispatching Marines to topple the government of Haiti, seemed preposterous. But George H.W. Bush did the former in 1992, and Bill Clinton did the latter in 1994.