Ehud Barak called for intensified sanctions on Iran at the World Economic Forum in Davos.

Barak, Israel’s defense minister and deputy prime minister, said Friday that a stable world order would be impossible if Iran achieves a nuclear weapons capability.

“Iran is prepared to defy and decieve the whole world to turn themselves into a nuclear power,” Barak said during a session at the Swiss forum, according to the Guardian. “This will be the end of any conceivable anti-proliferation program. Major powers in the region will feel compelled to turn nuclear.”

Barak called for tougher sanctions to prevent that from happening.

Iran maintains its nuclear program is intended for peaceful purposes, but Israel and most Western governments dispute that.