In a televised speech marking the Muslim holy day of Ashura, Hezbollah chief Hassan Nasrallah warned that his terror group would “sever” Israel’s hand if it dared to try and access offshore gas reserves, threatening to attack the Jewish state next month. It was his fourth such threat in as many weeks.

“We have to be ready for all options,” Nasrallah said. “Any aggression towards Lebanon will not go unpunished.”

The U.S. is brokering talks surrounding a decades-long maritime dispute between Israel and Lebanon. Oil and gas reserves were discovered in the territorial waters under dispute.

Hezbollah threatened war over Israel’s decision to develop the Karish gas field and has attacked the rig twice in recent months. The Israeli military intercepted four Hezbollah drones headed for the rig in June and July.

“Lebanon’s oil, gas and water resources must remain under its control and no one should be allowed to rob the country,” Nasrallah asserted. “The hand that reaches for any of this wealth will be severed.”

He went on to claim that Israel planned on assassinating senior Palestinians in Lebanon. “An attack on any person in Lebanon will not go unanswered,” he threatened.