GingerV,

The RAND-MIPT Terrorism Incident Database inclusion criteria were easier to get to. Should have started there. Each incident is separate. Aggregation is performed by the queries.

http://www.rand.org/psj/rand-mipt.html

The "Understanding the Terrorism Database" PDF http://www.mipt.org/pdf/miptbulletinq1-2002.pdf includes some graphs on page 5 which, to my eye, restate the political and economic patterns I suggested in an earlier post.

As to what the data may or may not support: In general, theories may be disproved by facts, not proved. To assert that the WOT has failed, or that its central concepts are in error, is to assert that there exists corroborating data to that effect. This is not at all the same as claiming that the data fails to support the WOT. Absence of evidence is not evidence of absence.

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Eudaimonia