There is a reasonable concern that can be raised in response to my view that the red line should be drawn at the murder of civilians rather than at murdering them with chemical weapons. This is the worry that my view would abandon the red line being drawn for using chemical weapons against civilians, thus creating a situation in which there are no red lines. This would be problematic because while the murder of civilians with conventional weapons is tolerable, crossing the red line of murdering civilians with chemical weapons does at least generate a response. Since some response from the world is better than no response, it is clearly better to have some viable red line rather than one everyone will simply ignore.
The tolerance of conventional murder and opposition to chemical murder has resulted in some actions whose impact should be duly assessed, to get some picture of the value of the chemical red line.
One impact that has been touted by some former members of the Obama administration is the fact that Syria got rid of many of its chemical weapons because of pressure from the United States and the world. On the plus side, less chemical weapons entails less possible murder with chemical weapons, which is presumably a good thing. One obvious offset to this alleged good is the concern that the Syrian government simply filled up the chemical kill gap with conventional killing, thus producing roughly the same number of deaths. If this is the case, then the focus on chemical weapons did not reduce the number of deaths.
This point could be countered by arguing that being murdered with chemical weapons is worse than being murdered with conventional weapons. The usual case for this is based on the claim that chemical weapons cause more suffering than chemical weapons. The usual response to this is that death by conventional weapon can be as or even more awful that death by chemical weapon. For example, a person who slowly dies while buried under the rubble caused by conventional bombs has certainly suffered more than a person who is killed almost immediately by a chemical weapon. As such, if death by chemical weapon is roughly equal to death by conventional weapon, then the difference between the two weapons is a difference that does not make a morally relevant difference. This can be illustrated by the following analogy.
Imagine that Sam is engaged in regularly murdering people in his neighborhood with guns. Those outside the neighborhood do not like this, but do nothing beyond Tweeting and posting about how awful Sam is. Then, one day, Sam tries a new type of murder: he poisons a few people. The neighbors are outraged and, after Tweeting with righteous fury, have their best shooter take a few rifle shots at where they think Sam keeps his poison. Sam goes back to murdering with his guns and the neighbors go back to occasionally tweeting about how bad Sam is. If this at least reduced Sam’s killing rate, this action would have some merit. But, if Sam just goes on killing with his guns, the action would have no meaningful impact and would have been pointless. At least beyond making the neighbors feel righteous for a short while.
The general point of this analogy shows the problem with how the chemical red line is used. To be specific, it allows for occasional and limited action when violations take place, then the offender merely returns to conventional murder. This does not address the real concern, namely that civilians are being murdered. As such, my original point seems to stand: the chemical weapon red line appears to create a moral space in which murder is tolerated while allowing a pretense of having meaningful moral standards. While this is presumably an awful thing to consider, having some red line might be worse than having no red line—after all, the chemical weapon red line enables the wicked self-deception that we are engaged in righteous action when in fact we are not. This allows us to salve our conscience and say “at least they are not being killed with chemical weapons” while we tolerate more murder.