Ehud Barak seems to me to be Israel’s version of John McCain - honorable military service followed by a “public service” career in which he demonstrated an exceptional knack for betrayal, sabotage and undermining of his putative friends and allies, not to mention his country.
I will grant that he’s not freaking insane like McCain, however...
Sure. Insane is Perez’ department. Ehud is simply malevolent.