In "The War On Truth", Nafeez Ahmed reports on a supposed warning that the US received immediately before 9/11:
This is what NBC said, and it's commonly used as one of many indicators that the US ignored warnings to 9/11. However, what isn't so commonly mentioned is that the story was immediately disputed in a CNN report:
Does this prove the call never happened? Of course not. But we think you should at least know that this version of the story exists.