[By Tuesday afternoon, Trump's staff sensed the culmination of a familiar cycle: The president was about to revert to his initial, more defiant stance.]
Just in case anyone forgot.  This is what Trump consider's "Modern Day Presidential."  That's right.  Not being diplomatic, not being a statesman, not being humble enough to entertain the notion that his response on Saturday was in any way deficient is Trump's idea of "Modern Day Presidential."
That's about as analogous to "presidential" as calling a proven, unapologetic murderer a "pacifist."