Justin Bronk: ISIS is a guerrilla army that has captured large stocks of modern weaponry.
From Guerrillas To Conquerors: How ISIS Has Changed -- Justin Bronk, CNN
(CNN) -- It is a question that the global community is seeking to understand as the crisis in Iraq and Syria deepens. How can such a numerically small force as ISIS, which calls itself the Islamic State, has taken control of vast swathes of Syria and Iraq, and how can it hold the ground taken while simultaneously conducting multiple offensive actions in both countries?
The most recent CIA estimate in September 2014 put the total number of ISIS fighters in Iraq and Syria at between 20,000 and 31,500. But such numbers, while alarming, are not nearly enough to explain the stunning military successes the group has enjoyed.
ISIS is at heart a guerrilla army that has recently captured large stocks of modern and heavy weaponry.
Read more ....
My Comment: And what is even more worrisome is that they are continuing to grow .... attracting scores of new recruits on a daily basis .... US worried over 'acceleration' of ISIS recruits (The Hill).