Pay attention for a change to people who actually know something and can think straight such as Victor Davis Hanson and Charles Krauthammer.
At a bare minimum, make the case to the American people and consult with congress.
A simple question that John Kerry does not address in his case for intervention is the one posed by Hanson: "And what of the irony that Assad is probably no worse a custodian of WMD than is the opposition that we would de facto [be] aiding?"