Lol, apparently ISIS have taken responsibility for the Iranian bombing in what is possibly the biggest strategic own goal in my lifetime.
If Iran was left to believe this was some kind of American-led attack the ongoing destabilisation would be far more exploitable for ISIS, with Iran and the West at each others throats.
Instead they owned up to it and just made everyone hate them more. On the flip side, we're in the timeline where ISIS possibly prevented WWIII?