No Ghandi would just skip to nuking the earth into a burnt glass. I learned that from the Civ games. Why the hell wouldn't they remove the glitch that makes him like that?! I should not say to myself "Well time to kill Ghandi before he kills me. " in a game...
its not a glitch actually. Ghandi is coded deliberately that way. His likelihood to nuke is the highest at 12 but he has the lowest nuking % out of all the civs.
that means that he won't nuke you if you don't screw with his shit. If you do though, don't expect just a simple war, he will bring the big guns right from the start xD