Yes, it is only "Syria's alleged poison gas attack" as the AP article in your April 11, edition put it. The cartoon in the same issue, however, would lead many readers to conclude the case against Bashar Assad is open and shut.
It's possible that Assad did do it. His regime certainly doesn't qualify for sainthood. But it's also possible that this was a "false flag" attack done by rebels made desperate by that fact that Assad's forces are beating them. Kill some civilians with poison gas, scream that Assad did it and get the U.S. military to intervene and turn things around.
Even supposing that Assad is the guilty party, that's not much of a case for U.S. intervention. The U.S. national debt is poised to exceed $22 trillion, and that alone argues that America should be getting out of the Middle East instead of more deeply involved. There would likely be more American casualties as well, on top of the nearly 7,000 killed in Afghanistan and Iraq.
Atrocities are nothing new in that part of the world. We can't be expected to punish the perpetrators of every single one.
If Assad did do it, then let the Turks, the Iraqis, the Jordanians and the still surviving rebel fighters get together to punish his regime, maybe with some Israeli help. America has already expended way too much money and blood in that insane part of the planet.