.... living in the United Sta­tes
& who sent me a link to this arti­cle.

Dear friend,

I am sur­pri­sed how anyone would be afraid of the small num­ber of asylum see­kers ente­ring Europe - small in com­pa­ri­son to the actual num­ber of citi­zens: We (in Ger­many) had about 450,000 regi­ste­red asylum see­kers up to now, with about 600,000 people inside the coun­try regi­ste­red as refu­gees but not yet regi­ste­red as asy­l­ants. These are the lar­gest group in all of the European coun­tries.

Com­pa­red to our popu­la­tion of 83,000,000 this is a very small pro­por­tion, in fact it's 1,27% of inco­m­ing new citi­zens - and this num­ber is going to shrink because not all here now will be accep­ted to stay.

As to the link you sent:

was a close ally of the U.S.A., backed because of the inte­rest of your coun­try in the oil sur­fa­ced there. Since the Shah (Rheza Pah­lewi) tur­ned away from the Ame­ri­cans and star­ted to seek alter­na­ti­ves in the for­mer USSR and emer­ging China he was no lon­ger backed and the oppo­si­tion to his dic­ta­tory rule, sup­por­ted by the cle­rics, came to power.

had been attacked by the for­mer USSR and the Ame­ri­cans backed the Tali­ban to keep the Rus­si­ans busy & occupy their tro­ops so that they would not be a threat elsew­here.

in recent years the U.S.A. star­ted a series of wars [direct: Kuwait, Irak, Afgha­ni­stan; indi­rect: Leba­non, Syria, Tune­sia.] in the Middle East to sta­bi­lize the steady flow of oil from this region.
Whe­re­ver the US inter­vened - dri­ven by the assump­tion that all coun­tries should embrace the same prin­ci­ples as they do them­sel­ves - it ended in dis­a­ster.

The rea­son we have so many asylum see­kers - to con­clude from the above - is the US action in the Middle East, dis­pla­c­ing Mil­li­ons that are fle­eing from war & destruc­tion in their coun­tries [Afgha­ni­stan, North Africa, Syria].

Today's United Sta­tes thrive from two fac­tors:
Sel­ling arms & com­pu­ter tech­no­logy - and doing ALL nec­cessary to make this pos­si­ble. Even at the cost of human suf­fe­ring & star­va­tion, with more and more reck­less means, keeping a mili­tary force that eats up the majo­rity of the bud­get, while neglec­ting infra­struc­ture and edu­ca­tion.

Trea­ties like TPP / TTIP and the like and enfor­cing a copy­right law bene­fi­cial only to the big US play­ers are used to with­stand any desi­red chan­ges by the rest of the world, while keeping a tight grip on infor­ma­tion by spy­ing on every citi­zen in every coun­try on this pla­net via NSA.

Maybe you haven't rea­li­zed:
The United Sta­tes is a high secu­rity pri­son in its­elf. With tight con­trols [body scan, fin­ger­prin­ting, iris scan] & the deci­sion who is let in and out at the bor­der assi­gned to medi­o­cre ser­vants who don't have the per­so­na­lity nee­ded when han­ded over power like this - it's almost like "The Tru­man Show" at a somew­hat dif­fe­rent level.

To sum up:
The US actions around the globe are desta­bi­li­zing many coun­tries whose citi­zens then seek a bet­ter life elsew­here - like in Europe.

It's not the expan­sion of Islam, it's the nar­row mind­set of fun­da­men­tal chri­stian belie­vers in the U.S.A. cau­sing this mass migra­tion by try­ing to defend the United Sta­tes against a threat that doesn't really exist - except in their minds. And it's the action of big cor­po­ra­ti­ons keeping their busi­ness of sel­ling wea­pons rol­ling by stir­ring up con­flict all around the world by stee­ring the US gouvernment(s) & secret ser­vices to initiate tur­moil and destruc­tion of elec­ted ent­i­ties elsew­here.

Sorry if this isn't what you may have expec­ted as an ans­wer.
Let's keep friends any­way ....