I do not agree with your staement at ALL.
He should, and will, put the focus right smack on the cause of these attacks. That is the failure of this POTUS and his lackeys who will use this issue for political gains.
The blame is theirs to avoid, put it on them and let them explain.
Really? You believe that Trump should go forward with his original plan to devote his entire speech tomorrow to attacking Hillary on her past scandals, especially on the donations-for-favors issues dealt with in the book Clinton Cash? It seems to me going forward with that pre-prepared speech would seem coarse and insensitive to the victims and those concerned with the terrorist attack (or at least make Trump seem detached from what's going on in the world right now). That's why I said I think he needs to talk about terrorism instead. That is what is relevant right now.
If he goes ahead with his anti-Hillary/political corruption speech tomorrow, the press will hardly cover it among all the discussion of the terrorist attack. Right now Trump has the opportunity to elevate this issue to the top of the priorities list for the election. Once again I'm happy that it seems he's going to do that instead. He can still do his corrupt Hillary speech later when it will get more press coverage and seem more appropriate.