As damning as the images are, let’s remember we live in an age of unprecedented misinfo. Which doesn’t just include fake images, but can also include easier things like lying about the context of the image. I don’t see any source other than this one and social media posts so that’s why I’m suspicious.

Edit: Ok my cautious uncertainty is being downvoted by the uncautiously certain. So maybe I need to do a better job of pointing out why this might be BS:

• The picture has no context. We can tell it’s a slightly dark skinned person, which means it could be a Palestinian, or a Syrian, or an Iraqi, or a Houthi, or an Afghan…
• But, you say…do we know of any other executions like this? Why, yes we do. ISIS certainly did this, there’s videos of it.
• Of course, this all assumes the picture is real. And there’s really no guarantee it is. One problem I can see off the bat is that the prisoner has a zip tie on his hand, BUT it’s tight around his wrist, unlike how you’d imagine someone would be zip tied - around both wrists. Another problem is that the arm is intact, meaning he wasn’t zip tied around his back which is how it’s usually done. It’s possible this was a soldier run over by a tank in a combat zone, and the zip tie was added later. Or the whole image is fake. Or the whole image is real and there’s some reasonable explanation for the oddness of the zip tie, I really don’t know. But it at least might be BS on some level.