With regards to Olmert, all everyone is talking about is the legal process. Olmert doesn't deny that he took envelopes of cash, he just says it was legal. This is a byproduct of the judicial dictatorship that rules Israel. The judges have the final word on everything, they decide whether government decisions are reasonable. Therefore, everyone has come to think that if something is legal there is no problem, it is ethical and moral. Because of this everyone is saying let's wait and see if he is indicted.
Unfortunately, this is completely false, Something can be perfectly legal but unethical and immoral. As the Ramban famously says at the beginning of Parshas קדושים, one can be a נבל ברשות התורה. I am waiting for someone, anyone, to get up and say I don't care whether he is indicted, I don't care if it was legal, the PM of Israel should not be taking cash in envelopes from rich Americans. It is unethical and he needs to go. If any President of the US was in the same situation, he would be out the door in a few days. Everyone in America would understand that the legality of his actions is irrelevant, a leader can't do that. Unfortunately, this kind of accountability and ethical sense is completely missing from Israeli politics.