Is it necessary for the EU to accept Syrian refugees from Turkey?

Turk-Syrian border is thought to be world’s easiest border to cross. When the civil war started in Syria, many Syrians moved to Turkey, aiming their way to Europe by entering Greece. Turkey can only hold these refugees for a limited time in its refugee camps but it cannot get these refugees settled in.

There was an irregular and immense flow of immigrants who tried to cross the Greek border through sea. There were many refugees who were died during this migration. After all these crisis and management flaws, EU decided to make a deal with Turkey.

According to this deal all the refugees from Greece will be returned to Turkey. And in return Turkey will resettle the Syrian refugees in Europe. EU made this deal to organize the inevitable arrival of Syrian refugees and to save the continent from terrorism.