As ISIS has shown in their own magazine, they’ll probably never try to pull off a massive terror attack on American soil. Instead, they’ll indoctrinate useful idiots who already live here, and convince them to engage in numerous small attacks, similar to the bombings, knifings, and shootings that have plagued Europe in recent years. It’s a strategy that is far less likely to be foiled, costs significantly less, and can be maintained long after ISIS is overrun in the Middle East.
And what also makes this strategy so enticing is that these small attacks, which are so much more difficult to prevent, is that they can add up over time. They have the potential to accumulate death tolls that dwarf previous terror attacks, and there is little doubt that groups like ISIS are working to make that happen right now.