The should have limited immunity for crimes committed WHILE in office. They are ALWAYS subject to impeachment for crimes committed in office. And, once impeached and convicted on the impeachment charges, they may then be handed over to criminal authorities for suitable proceedings. Just so you will understand, the impeachment is the legal proceedure to remove a sitting official. He must be convicted of the impeachment charges to be removed. Then and only then is he available for the criminal courts to prosecute. In the US this includes "misdemeanors and other high offences" according to the Constitution. And, you Israelis need on of those too. It will rein in your extreme liberal run-away supreme court saboteurs because they can then only be judges of matters in relation to their constitutionality and not activist saboteurs weasring judges robes.
Nigeria says troops destroy extremist camp, rescue 178 people (AP)
from the article: Ministers support bill exempting prime ministers from investigation