If Liberman thought that we should attack Iranian nuclear facilities but the majority of the cabinet were against it then would that mean Israel was planning to attack Iranian nuclear facilities or would it be Liberman wanted to attack the Iranian nuclear facilities? Also training to kill politicians is not actually because they are planning to kill them it means they train so they are able to do it if it was decided in future. Its their version of military war games today where the military train for the invasion of another country for if there is a time in future when they may need to but they don't train because they plan to do it now. The members of Lehi & the other jewish groups were no angels for sure but 99% of the time at least they went after military or political targets who are legitimate for freedom fighters, they didn't blow up busses full of civilians which is where freedom fighting becomes terror.
Israeli moderately wounded in stabbing attack near West Bank settlement (Haaretz)
from the article: 'MI5 believed Jewish underground wanted to assassinate Churchill'