It goes further, the continued existence of the nation Israel is denied. They want Israel dismantled, not sure what people think would happen to the Jewish population in this case.

Palestine has not been a nation historically. Westbank was part of Jordan before they attacked Israel. Israel occupies the Westbank ever since. What would even be the ruling Government of Palestine? Fatah or Hamas? There isn't one singular government for the two unconnected regions. If it's a nation, it's two nations, Westbank and Gaza.