Not really, the purpose of investigation is to find out whether the crime actually happened and whether it can be proven (sometimes it may be either a mistake o

Not really, the purpose of investigation is to find out whether the crime actually happened and whether it can be proven (sometimes it may be either a mistake or deliberately misleading change by somebody with much to gain if the accused person is hurt, and police can check legal dealings by senior politicians to ensure they are indeed legal), so the outcome of the investigation is not known upfront, and can come out any way, depending on the evidence. What Netanyahu is saying, that it wasn't a honest investigation since the investigators were intending, for political reasons, to recommend to indict regardless of what the actual evidence - unknown to them by then - showed. Whether it is true or not, I don't know - in Israeli politics there's a fair share of both crooked politicians and biased policing, so could be either way (or even both ways). The boundaries between business and politics are not very thick in Israel anyway, so there's a lot of space for both corrupt dealings and accusations in such without hard proof (which is sometimes very hard to come by and relies on "he said/she said" evidence).