Coercive measure against whom? The US' special relationship with Saudi Arabia is well known. Numerous presidents including Bush and Trump are personal friends with the Saudi royal family. That the Saudis financed 9/11 and the American government covered that complicity up in the 9/11 commission report is an open secret.

I'm 90% convinced the only reason we went to war in Iraq (which was justified initially with specious links between Iraq and 9/11) was to take the heat off of SA because actual consequences for our bestest oil buddies killing several thousand Americans were simply not on the table, and they won't be on the table in the future.