I shall say relatively little about the plot, which basically consists of the bad guys (who want to go unnoticed until they can destroy 99%+ of the human race, and can do so very easily) then deciding to sponsor repeated terrorist attacks that serve no purpose except to heighten government alert levels. This leads, inevitably, to the guy who is supposed to destroy the world (by relasing a virus at the Australian Olympics) getting caught because the terrorists have aroused governmment interest...
OK, that's fairly standard contrived plotting. What isn't is that the delivery system for the virus is a water sprayer system designed to cool down the stadium from the searing summer heat. Except that we're talking the Olympics, and Australia, which is a Southern Hemisphere country. E.g., it's an event that is taking place in the middle of WINTER. No searing summer heat.
I could have fixed this by e.g. saying that it's the water supply for the Olympic Village or the drinking fountains rather than the stadium cooling system.
I'm pretty sure that any good editor could do so much more elegantly. I can only assume that by the time he wrote Rainbow Six he was such an enormous success that nobody was doing this sort of proofreading.