Israeli Foreign Minister Israel Katz on October 2 declared UN Secretary-General Antonio Guterres “persona non grata” and barred him from entering Israel, claiming Guterres had not “unequivocally” condemned Iran's retaliatory attack, The Cradle reported.

The ban imposed on Guterres comes just days after Prime Minister Benjamin Netanyahu accused the UN of being biased against Israel, describing the institution as a “moral stain,” a “swamp of antisemitism,” and a “flat earth society.”

“Until this anti-Semitic swamp is drained, the UN will be viewed by fair-minded people everywhere as nothing more than a contemptuous farce,” the Israeli premier said to a nearly empty hall at the UN headquarters.

Earlier this year, Guterres placed Israel on the annual blacklist of countries and organizations harming children in conflict zones, joining organizations like ISIS, Al-Qaeda, and Boko Haram.

In February, Katz declared Brazilian President Luiz Inacio Lula da Silva a “persona non grata” in response to remarks by the Latin American leader likening Israeli war crimes in Gaza to Adolf Hitler's in Nazi Germany.

Israel has also imposed a visa ban on Francesca Albanese, the UN special rapporteur for the occupied Palestinian territories.