In the letter, the Iran ambassador to the UN cautioned against Israel's threat to use nuclear weapons in Gaza, calling the international community "to condemn Israeli's reckless and dangerous statements and to apply pressure to ensure that Israel fully cooperates with the International Atomic Energy Agency (IAEA) and adheres to its safeguards and verification procedures, dismantles its nuclear weapons program, and joins and fully implements all relevant international treaties and conventions of Weapons of Mass Destruction."