I got it wrong, had hoped we could look at the numbers, not the race or faith.
Yes some difficulty exists because they do not look like us or even think like us.
We can if we wish claim every refugee/migrant is a terrorist.
Ignore that the richest country in the world, America, is a nation of migrants and refugees
NUMBERS how many can the EU take? is it wise to take so many, even if they, every one of them, are white Australians forced after someone pulled the plug and our country sank, to become migrants refugees?
Is it wise to import 4 workers for every job? is lowering the standard of living for every EU citizen a good idea? or are they too importing poverty? fact.. the EU is starting to close its doors,
A middle path? putting it crudely but arriving at the same out come the west could bribe refugees/migrants to stay at home with real increasing better used aid

Belly, have a look at what is causing conflict.

It is the desire of some to rule over others; and enslave them to an ideology. People who want to rule the World, one World Government.

Why do you think Turkey, Syria, Ukraine, Iraq have peoples uprisings or are at war? Similar developments are happening in Sweden, France, Germany and England. Why? Because the natives are feeling threatened by an ideology that conflicts with their values.

Those that want World peace, is on their terms [kill all opponents] and cannot accept political diversity and democratic Governments. Even in the Land Of the Free we have half the people not accept a democratically elected President. That identifies conflict, otherwise we must accept the right of all to be free to live their lives within a constitution that represents the rights of all people.

Belly,
Have another look at what Bazz and Joesephus have said. It is culture and ideology that causes conflict. One group wanting to force their system on others.

There is no middle ground with Islam, as Ise Mise pointed out. You are looking for causes that are not there. Over population can be fixed by government sponsored family planning, see Iran and Thialand.

Islam has made no secret of the fact that they wish to conquer the world.

I think being the nice, but thoroughly confused gentleman he is; BELLY looks upon the events in Europe purely through ideological eyes, rather than through the vision of a pragmatists.

History explains it all.
Mohammad commanded muslims to subject the world to the will of Allah.
Their initial objective was to conquer Rome, the declining power of
his times.
They successfully invaded Egypt, Nth Africa, Mesopotamia, India and finally Spain.
It is thought that they killed 8 million Hindus and India still has that problem.

They occupied Spain for 700 years and still claim that Andalusia is
Islamic Land illegally occupied by the Spanish.
Sharia law based on the Koran states that any land once occupied by
Muslims remains Islamic land forever.
You might not know that the Vatican is Islamic land under that rule.
It was occupied by an Islamic army from Sicily for a brief period.

It is still very true; He who ignores history is condemned to relive it.

Islam is what done it! yet before the second world war we never seemed to have much trouble with them, ok truth, Islam is a faith based on a primitive belief in a God that never existed, like Christianity,both have impacted badly on humanity, if, Both did not exist, this problem still would.
TELL ME how can the EU us, any western country not continue to be one that has multi cultures?
EU will, no doubt, stop refugees at the boarders,much like we do,are some saying the wars in Africa and the middle east are bought about by Islam, not other countries who should in my view have left those countries long ago?
are all the worlds problems Islam? really?