For countries, refusing entry to Muslims is a good start but they can't forget that in a materialistic world one particular cult is very seductive. Islam is a poison of the mind that can inflict a member of any race:
A 23-year-old South Korean man is under investigation for allegedly seeking to join the Islamic State in Iraq and Syria (ISIS) terrorist group, and preparing for a terrorist attack while he was serving in the army. [...]
The man surnamed Park, 23, was found to have stolen an ignition device for explosives while being trained at an army engineer school after joining an infantry unit near Seoul in October 2017, broadcaster KBS reported.