It’s one of His inconceivable potencies. He gives us free will and lets us choose evil, but He is not responsible for the evil humans choose; but when they choose evil, they pay the price, under His supervision as always.
He never does evil. Regarding authorities appointed by God, I agree if you mean universal authorities who do His will; presidents? Ha, no way - just more free will in action. 0bastard wasn’t placed there personally by God. He merely allowed it all to happen due to the wrong desires of humans.
Of course, everything is also part of larger plans, only know to Him. And “everything the Lord does serves many purposes”.
Really, that's interesting. What about Daniel 4:17?