There are a lot of weapons in the Middle East. And with an estimated $18 billion in arms sales slated for Arab states in 2015 alone, there are a lot more coming in.
ISIS has anywhere from 30,000 to 100,000 fighters and is one of the
world's most dangerous terroristgroups.
But how did a group barely anyone knew of just a few years ago take over vast territories in Iraq and Syria and carry out terror attacks in Egypt and France?
Guns — lots of them. And how they got them is a murky tale of failed Soviet states, Middle Eastern gun culture, arms smuggling, and battlefield success.

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