Will military intervention in Syria help? Let's face it, no, it won't help. There are human rights violations happening across the world that have been worse than this one with no intervention including past use of chemical weapons. Exactly who is the UN or the U.S. to attack if they go after Syria with military force. A handful of people are likely the cause of this event, the one who thought it up, the ones who agreed and the ones who carried it out. We aren't talking about the population of Syria.
Countries are, generally, left to rule themselves. If there is a way to arrest and convict the masterminds of the chemical weapons use under the Geneva convention then that would be perhaps a reason for the UN wanting someone to enter a conflict in order for the treatise that came out of the Geneva convention to apply but is that a reason to get involved? No.
Were something so horrific to happen in the U.S. our laws would bind us to find the culprit and try them in a court of law. Then if they are found guilty a punishment should be handed out. Syria should be policing themselves in a similar way- that is, it is their place to take care of their criminals.
The United States is not a police force for the entire world. If the UN tells the U.S. or the U.S. decides to take physical, military action what will they attack? They aren't likely to storm the President and Prime Minister's offices in Syria. Would they bomb the entire building they are in potentially killing many who are fundamentally innocent of any crime? Would they tell Syria they were coming and to evacuate so they could bomb empty buildings (like frequently happened in Iraq)? To what end? Again, the individuals in Syria are the ones who would suffer and it would likely do nothing to help the people of Syria.
There is no doubt that something horrific has happened. Darfur in Sudan, Burma in Myanmar, Cairo in Egypt, North Korea and many others have and continue to commit human rights abuses at a significant level. The United States shouldn't be everything to everyone.
What we can do is utilize sanctions and diplomacy though it has generally done little in the past. Without getting a change in culture and change of heart in these countries and their leadership we cannot fix what ails them. Egypt is a prime example. The Arab Spring will take a long time if it will end up leading to real democracy. Some populations aren't even ready for democracy, not knowing what to do with it when they have it, feeling lost by all the decisions they have to make they never made before.
Nothing here is easy. But, military intervention is not the answer in this case. It will hurt the people of Syria further and put American lives in danger unnecessarily, not to mention we are still in a couple wars and continue to have economic stresses. Something should be done but the something should not be military intervention.