Valid points. It is dumbfounding and mystifying how stubbornly people simply refuse to address the root-causes of the problem (one of the basic principles of Catholic social teaching). Only a blind ideology can be this blinding. 

They simply refuse to ask: Who is benefiting from this? 
The #1 beneficiary: Weapons' industry. In the past fifteen years or so, many trillions of dollars have been pocketed by those providing the weapons that create destitute people.  
#2 beneficiary, are countries who gain political and geo-strategic capital: Turkey, Saudi Arabia, Iran, the US, just to name a few. 
#3 beneficiary, (radical) Islamist leaders driven by (radical) Islamist ideology when they funnel the stream of millions of people into countries which they consider to be evil, bad and the abode of Satan.