https://www.unhcr.org/refugee-statistics/ > Turkey hosts the largest number of refugees, with nearly 3.7 million people.

https://en.m.wikipedia.org/wiki/Syrians_in_Turkey > The number of Syrians in Turkey is estimated at over 3.6 million people as of March 2020,[3] and consists mainly of refugees of the Syrian Civil War.

Yes. And turkey is also very active in creating more refugees by supporting islamists in syria and active combat raids. And is using the mass of refugees regulary to blackmail the EU.

Turkey did not start the war in Syria, but they do share a border with them, and have a responsibility to secure their border from a failed state. They took in more refugees than any other country in the world, which has a massive impact on their economy and security. Requesting economic aid from the EU to deal with this is not blackmail. The EU benefits massively from keeping Syrians in Turkey, because Syrians primarily use it as a pass through on their way to Europe.

"and have a responsibility to secure their border from a failed state."

https://en.wikipedia.org/wiki/Turkish_involvement_in_the_Syr...

So you think supporting islamist militias is helping stabilize said neighbor state?