Can't tell whether it's "real" or not, but the consequences of such an attack would be catastrophic and devastating to any nation or person aligned with Islam.
The entirety of the non-Muslim world would view Islamic nations and individuals as an immediate threat, to be dealt with in the most severe and unambiguous terms. The reaction would be savage, unremitting, and final. And I mean nuclear. Pakistan's nukes will be vaporized. The "Arab" oilfields will be seized. In the US, the vast majority of Muslims would be forcibly incarcerated or worse.
There will be no Caliphate, anywhere, ever. These Islamist animals would become the bane of all human civilation, and be exterminated without mercy.
But where do we begin to get them? Where 'would' we go?