Once it becomes clear who was responsible for launching the chemical attack in Syria by a independent group (like the UN, not Anglo-American intelligence agencies who have been proven by Iraq not to be trusted) then force should be used to punish those responsible, ideally by placing them under the Hague for war crimes.
On a ethical basis, it is a bit odd why killing somebody by bombs is acceptable but using sarin is not. However, the world currently has a taboo of using chemical weapons and we should try to keep that going.
Regarding who was responsible, I would suggest that the rebels are far more likely to be responsible then the Assad regime which is after all winning the war without chemical weapons.
Let us not forget that the UN declared that the rebels were the most likely culprits behind a previous chemical attack.
http://www.wsws.org/en/articles/2013/05 ... i-m07.html
In a series of interviews, UN investigator Carla del Ponte said that sarin gas used in Syria was fired by the US-backed opposition, not the regime of President Bashar al-Assad.
Her account explodes the lies on which Washington and its European allies have based their campaign for war with Syria, according to which the US and its allies are preparing to attack Syria to protect its people from Assad’s chemical weapons. In fact, available evidence of sarin use implicates the Islamist-dominated “rebels” who are armed by US-allied Middle Eastern countries, under CIA supervision.
What I find most remarkable is that nobody in the mainstream media has noted the UN declaration in May 2013. No wonder even critically minded people on PS end up believing the governments narrative.