From recent reports, indication’s are that the US government on their base in Incirlic Turkey, stores or keeps about 50 nuclear weapons. Even so they may be under US control, at the moment, I would not trust the current dictator of Turkey, not even in an empty basement. Not to mention that he also happens to be a (m)uslim what makes him even less trustworthy.
It sounds like a deal with the devil. We stay in NATO and put up with a regime that at the very least enables terrorism. In exchange, we get to keep nuclear weapons on Turkish soil. Meanwhile, Germany is flooded with Turkish migrants. Can’t see where this leads anywhere good.