It's not really my place to tell the British state how to exercise its capacity for violence. But the following is something that I would see as an improvement on now: Uruguay's small military is largely funded through compensation it receives from the UN for providing it with troops. The only other circumstance in which Uruguay would deploy its troops is a direct attack on Uruguay. If Britain were to do something similar, and the only British soldiers in any kind of active service were those seconded to help with UN missions, as is the case with Uruguay, that would be better than now. The argument then shifts towards making the UN something that can be effective, but it can't be effective unless countries like Britain join with countries like Uruguay and support it.
I don't advocate that, btw. What I would want or do is something far more unlikely, but it would be an improvement on now - no country deploying its troops abroad except on a UN-led mission under any circumstances other than a direct attack on that country.
But that's a wider argument I don't particularly want to have. For now, I'd rather stick to a simple position: I oppose any military action by Britain in Syria. You don't have to agree with my other ideas to agree with that. But if your position is that you oppose action in Syria without proof of chemical weapons, then you're not with me on that.