Both the Kurds & Turkey are allies. However, Turkey is a member of NATO. So how do we choose sides? It's a CF we should avoid. Either expel Turkey from NATO and bring in the remaining members of NATO to deal with Turkey, or arm the Kurds.
The time has come to quit interjecting our national treasures into every crisis unilaterally & militarily.
Just in case you missed it
Turkey Attacks Kurds in Syria
https://www.youtube.com/watch?v=-DUPnzfkNFY
And who says Turkey is an ally?