Secretary of War Pete Hegseth’s “paranoia” about Army Secretary Dan Driscoll taking his job fueled the firing of the Army’s top general, current and former administration officials tell The Post — as a top contender emerges to replace Driscoll if he’s canned next. Hegseth on Thursday demanded the resignation of Army Chief of Staff Gen. Randy George’s — Driscoll’s top aide — in the middle of the Iran war for reasons that were not publicly stated, following months of mounting tensions with Driscoll. “This is all driven by the insecurity and paranoia that Pete has developed since Signalgate. Unfortunately, it...