Yossi Klein Halevi makes the case:
[T]he cruelest blow to Benzion came from his son. A political rift between them opened during the election campaign of 1996, when Bibi declared that he would accept the Oslo Accords, while insisting on Palestinian reciprocity. Benzion was outraged. Bibi tried to explain that his endorsement of Oslo was only tactical. Benzion countered: What begins as tactical ends in a betrayal of principle. Benzion was right. In his second term Bibi became the first Likud leader to accept the principle of a two-state solution, the possible withdrawal from the second bank of the Jordan. While most of the international community missed the significance of Bibi’s historic concession, his father surely did not. Under Prime Minister Netanyahu, Revisionist ideology was buried in a state funeral.
So why are the settlements continuing to be built? And why did Netanyahu balk at the best chance for a two-state solution after Obama's election? My thoughts on Benzion's passing here.