Last night Defence Secretary Philip Hammond – fresh from seeing parliament refuse to grant the government a mandate to attack Syria – noted, with some frustration, that “Common sense must tell us that the Assad regime is going to be a little less uncomfortable tonight as a result of this decision in parliament“. This is a theme that has been repeated elsewhere
So much for taboo against chemical weapons use. UK Parliament decides it's no big deal. War criminals are watching.
— Max Boot (@MaxBoot) August 29, 2013
According to this perspective blocking military action will give succour to Assad and potentially emboldens those that would use Weapons of Mass Destruction (WMDs) or commit crimes against humanity.
This seems to me to be a very partial reading of the outcome of last night’s vote. On twitter I have indicated that I think there are 4 points those arguing that a failure to authorise strikes on Syria are failing to acknowledge: