[jbarham]

> If that was it, why are these terrorists not attacking Armenia? Or Zambia? Or Mexico? Or pretty much anywhere in Central and South America?

These countries have negligible numbers of Muslims.

There have been multiple Islamic terrorist attacks in Tanzania (which borders Zambia) and Kenya, both of which have significant Muslim minorities. Not to mention the frequent attacks by Boko Haram et al in Nigeria and the perpetual civil war in Somalia, which is overwhelmingly Muslim.

[semi-extrinsic]

I'm not saying militant Islamism doesn't exist, but rather that the attacks have several underlying motivations, and that radicalization is more likely when there is a preexisting conflict.

Even the threats and attacks against cartoonists, as mentioned by another commenter, go beyond the simplistic "kill all infidels just because they exist".