simply because the honest politicians with leftist world-view have enough information that such policies are destructive and unrealistic. Look at Peres, Barak... As for foreign financing of Israeli NGO's, it wouldn't be a problem as long as they do not harm the country. And this is exactly what NIF is doing. Don't forget that the Western European "Peace Movement" had been financed by Russian KGB.
Israeli vehicle hit in drive-by shooting in West Bank; no casualties reported (Haaretz)