The UN annually marks Palestinian solidarity on the anniversary of the 1947 vote to partition territory under Resolution 181.
Hezbollah leader Hassan Nasrallah boasted his group could shut down Israeli offshore plants within hours.
"The neo-Nazi threat is growing," Guterres told the audience, which included Holocaust survivors. "Some still seek to deny or diminish the fact of the Holocaust."
The request for UN Secretary-General Antonio Guterres to publicly brief the Security Council meeting was made by France, Bolivia, Egypt, Italy, Senegal, Sweden, Britain and Uruguay.
Guterres, who visited Israel in August, did not confirm Israel’s claims that the terrorist organization was arming itself in southern Lebanon, in violation of UN Security Council Resolution 1701.