Islamic State is deliberately trying to provoke outrage.

[Igel]

80. They mostly play to themselves.

Note that they're internally consistent. There are allies, foes, and neutrals, with very strong boundaries between them.

They left Japanese alone until the Japanese got involved. Japanese were neutral until they were foes.

Same for Americans. They left US citizens pretty much alone until the US decided to attack and support the enemies.

One thing to keep in mind, though, is the idea of communal responsibility and identity. You are not just an individual. You are your collective. If your collective needs to be punished or fought, any representative is fair game. In this they're also consistent.

The difficulty is figuring out what, exactly, their consistency consists of because it's very much not how I think. Mostly just listening to what they say is a decent guide.

That said, Jordan's response was culturally appropriate, if cruel, with the problem being that Jordan now has to follow through. IS called and raised and now Jordan needs to call their bluff or fold.