Why would any country risk having these animals in THEIR countries? Let these savages kill eachother and make it clear that no trade, diplomatic ties, or anything else will occur until the savages have all been wiped out. Then, make their global inclusion contingent upon joining the 21st century. That’s how it should be, but we will continue to PC ourselves into a global epidemic, or a bloodthirsty caliphate..
It is not their intent to “kill each other”. Islam is expansionist, not just nihilistic.
The EU, Red China, Russia and like-minded nations help the Islamists because of their own animus against the USA, Britain and Israel.
This is the twenty-first century, when peace dies once more; its defining characteristic. But peace yet may rise again.