Hardly a leader of Israel, the leader of a political group with 7 seats out of 120 in their equivalent of the House of Representative. The Palestinians say the same thing about Israel, at least in Israel it is the minority viewpoint.

In Iran it’s the Ayatollah saying it on the regular, and they’ve made it basically a national holiday. [1]

[1] - https://apnews.com/article/a033042303545d9ef783a95222d51b83