One way to look at what I'm saying... the other would be that we have a long and checkered history of attempting regime change and it never works. It's better we're not doing it with bullets this time but either way, we're still not going to achieve it unless the people there want to do it themselves.
I would personally rather we weren't anywhere near these things, so I'd suggest if we were that bothered we shouldn't go, which, you know, might actually achieve something. Instead, we're doing the same thing every time and expecting a different result.