You are also going to find out in this movie that there is a whole chit load of people you think are dead who are in fact alive and well... You could say they have been hiding in plain sight in the "witness protection" program of sorts... JQHN is only one of them...

"WWG1WGA" Who the [Bleeeeep!] do you think "Q" is???

"save the best for last"

The CABAL knows its finished and its over,, its only trying to prolong things... Both sides know how many chess moves are left and what those moves are at this point...

"Never interrupt your enemy while its in the process of destroying itself"

You don't rush things when your enemy is slowly plunging a dagger into his own chest...