People can read too much into things that are not there. People *want* to believe in justification for events that are far too tragic to bear, events that impacted everyone on earth. It's easier to personify the combined emotion and horror from that global event than it is to actually deal with those emotions engendered. With the advent of computers, its easy to "render" photos digitally to *appear* as abnormal and subsequently to place some devillish figure in the images.
In experiments I did in "autosuggestive thought", I took several photographs of cloud formations over a mountain over the course of several days. Some were volcanic in appearance, where the setting sun gave the clouds a reddish-orange glow to it and some were of the same mountain during the day, where the clouds appeared dark and ominous. I then gave those photos to 10 people, who first studied the cloud formations without any prior information. Each of the 10 people *knew* that the photos were of cloud formations over a mountain. Added to the equation were "suggestions" that there was a face in the cloud formations and those same 10 people *looked* for those faces. Some actually found images that *could* have been face-formations. With a little more information and an indication as to *where* the face would be - in this case the face of a bearded man - 50% of the experimentees thought they *could* see the face formed in the clouds. They were then asked to take the photo that held the clearest impression of that face (to them) and show their friends and family, logging how many of them actually "saw" the face in the clouds. Around 75% of all of those that were shown the photos and where the face supposedly appeared were convinced that there *was* a face-formation of a bearded man there.
A member of my family, who was rather religious, took a trip on an airplane and took some photos from the window (this was before certain regulations were in effect). In the clouds, she was convinced that she could see the face of Jesus. Other family members *could* see the same face there, but *only* at her indication.
When you have such high emotions as those engendered by some particularly destructive natural disasters or events such as 9/11, it takes one person to believe, then others will start to see the same thing, and the conspiracy theories will begin as a means of vindication or justification, including searching for references in "prophetic" works, such as the Bible, the Quoran or Nostradamus's quatrains, which can apply to so many different things. Eventually, the images/references will start to fit.
The "two brothers of one nation" could refer to the Twin Towers in New York, but then again could refer to the twin towers in Tel Aviv. If you also consider that Nostradamus could have been writing about his own turbulent times, but needed to obfuscate the authorities since he couldn't write about it directly. The "two brothers of one nation" could apply to the leaders during the French Revolution, or it could imply the fighting between the "brother nations" (north vs south) during the American Civil War. See my point? Misrepresentation becomes misinterpretation and there is no way to corroborate the information, only to correlate *some* things to imagery or verses and passages and quatrains.