Constitutional Latin Trinitarianism

In my recent post over at Trinities.org I mentioned what I take to be a stream of Latin trinitarian theology that doesn't satisfy what some have labeled "Latin Trinitarianism" [= LT]. Brian Leftow takes Aquinas to be a good representative of LT, and I think he is right. On LT the following are identity statements.

1. The Father is God.
2. The Son is God.
3. The Holy Spirit is God.

And of course, for those who interpret (1)-(3) as identity statements they must find a way to block the transitivity of identity such that e.g., 'The Father is the Son' turns out false.