Educating Muslims to carry weapons to fight for what? Their rights? Rights to rape, kill, terror and finish other human beings in the name of religion. A slaughter explaining the benefits of killing.
I don't think Muslims who know Islam goes for it but still, some people including non-Muslims and Muslims may go to earn money.
ISIS and his bloody conspirators tells whatever they like to make their conspiracy come true.
These people mainly target those people who are hurt by the Government or by other religions and have lost their family members due to a war or hurt due to similar events. Such people are emotionally weak and hence they don't mind joining these groups and kill others in the hope that their wounds will get some relief. When a person is weak, it's easy to mold them in a way you want and if one checks their members, half of them might be affected due to unfortunate circumstances and others might have been brain washed.
The fact is these leaders mostly don't do anything wrong themselves but they start forming groups who fight for them and harm others. These leaders sit back and enjoy the killing and since they have money, they get more and more people to join them.
This isn't a religious fight but they are just cruel monsters who don't care about their religion but hate humans.
There are many reasons/excuses for not joining this innocents-killing army. I really hope he knows what he is talking about. There is nothing hidden in what he is, just a political psycho. 
