Where do you get that idea?
You look at both sides of the equation and how it would happen.
One will sound more reasonable and realistic than another, logically, economically, motive wise, people wise, finance wise, human nature wise etc.
Terrorist attacks from Chechnyans have been happening forever and Russians have been fighting them for last 2 decades with them taking a movie theater hostage and an airport. Terrorist attacks happen daily all over the world.
American President staging a terrorist attack using other Americans to blow it’s own people in American for a secret agenda does not happen daily.
Yeah… tough choice here. I’ll go with the unicorns on this one.