Former Israeli prime minister Ariel Sharon, when asked to explain the apparent about-face that led him to advocate the unilateral withdrawal from the Gaza Strip, quoted a beloved Israeli pop ballad. “What you can see from there, you can’t see from here,” he said, referring to the shift in perspective he had supposedly undergone since coming to power.

Israeli-born Holocaust historian Omer Bartov invoked the same line when he was asked how he had come to view Israel’s ferocious assault on Gaza as a genocide. Living in the US, where he has spent more than three decades, he said, had given him the necessary distance to see the annihilation of Gaza for what it was. “I think it’s very hard to be dispassionate when you’re there,” he said.

Bartov did more than simply apply the word genocide to Israel’s actions: he shouted it from the establishment-media rooftops, making the case in a lengthy July 2025 essay in the New York Times titled: I’m a Genocide Scholar. I Know It When I See It. (He had addressed some of the arguments in a Guardian essay the year prior.) Bartov’s declaration cost him several close relationships, he told me, even though subsequent events have not only validated his analysis but further demonstrated the lack of concern for Palestinian suffering that has become prevalent in Israeli society.

His new book, Israel: What Went Wrong?, is an attempt to explain that indifference. The book, which was published on Tuesday, is a detailed account of how Israel was transformed from a hopeful nation that in its founding document promised “complete equality of social and political rights to all its citizens irrespective of religion, race or sex” into one intent on what he bluntly terms “settler colonialism and ethno-nationalism”.