Nominally. Not so much in practice.
But again, Erdogan is Trump's friend. Trump admires Erdogan. When Erdogan's thugs attacked and beat up protesters (who were no threat to them) in Washington, DC in May 2017, Trump said nothing. Watch what happened:
This is what Trump admires. Trump admires Erdogan. From that perspective and nominally through NATO, Turkey is an ally. More would disagree, but they aren't President. Even the GOP views Turkey as an enemy. This is going to drive a wedge between Trump and his supporters, and traditional Republicans.