Just a little old aside in a profile of John Bolton:

Mattis declined to comment for the record, but a former senior national-security official told me, without confirming any incidents, that a strategy had evolved. “The President thinks out loud,” he said. “Do you treat it like an order? Or do you treat it as part of a longer conversation? We treated it as part of a longer conversation.” By allowing Trump to talk without acting, he said, “we prevented a lot of bad things from happening.” In 2017, Mattis and his staff helped forestall a complete withdrawal of American forces from both Afghanistan and Syria.