"Begin attempted in 1948 to maintain his militia, and in 1952 was ready to start a civil war. And starting his anti-british "revolt" during WW2!" Begin was certainly a far less desirable leader for the Revisionist movement than Jabotinsky, and a far less desirable leader for the Yishuv than Ben Gurion. But, again, concerning Irgun's revolt in 1944, the Irgun stipulated two restricting conditions: avoidance of individual terror as a method and postponement of attacks on military targets until the war ended. On the subject of Civil War, it should be noted that this is precisely what Hagannah figures like Moshe Sneh and Eliahu Golomb threatened: "We demand that you cease immediately [your activity against the British]... We do not want a civil war... but we will be ready for that as well. We will be forced to adopt our own measures to prevent your activities. The police, in our opinion, will not be able to liquidate you, but if the Yishuv rebels, it could come to that."
19-year-old construction worker seriously injured after falling from scaffolding in Harish (Haaretz)
from the article: Book links Begin to 1952 plot to kill then-German Chancellor Adenauer