Causus Belli between turkey and the US

At least arguably, that's what this is. After all, we keep hearing about how Iranian weapons in the hands of militants in Iraq is a reason for the US to attack Iran - how is this different?

Except, of course, that it's not the US that's the victim here, rather the US might be at fault. So I expect it won't play very heavily in the press unless Turkey decides to do something about it.