Morton Klein, national president of the Zionist Organization of America, called the newly signed U.S.-Saudi civilian nuclear pact a "serious, dangerous mistake" that could touch off a Middle East arms race.

He told Newsmax on Thursday that any praise for the deal hinges on Saudi Arabia joining the Abraham Accords and recognizing Israel.

Klein made the comments on "Bianca Across the Nation" hours after President Donald Trump said on Truth Social that the pact is "totally subject" to Riyadh joining the Abraham Accords and that there would be "no enrichment of material."

Energy Secretary Chris Wright and Saudi Energy Minister Prince Abdulaziz bin Salman signed the Section 123 agreement on Wednesday, along with a bilateral safeguards agreement.

Klein credited Trump for tying the deal to normalization, calling that link "transformational to the Middle East" if it holds.

But he warned that the question of enrichment is unsettled.

Klein said the pact, as reported, pauses enrichment for two years while a joint U.S.-Saudi study considers next steps, an arrangement he called "very dangerous" because Turkey and Egypt have signaled they will demand equivalent rights.

The signed agreement, according to The Washington Post, gives Riyadh a pathway to enriching nuclear fuel domestically and commits the kingdom to using U.S. firms for its reactors.

The pact does not require Saudi Arabia to adopt the International Atomic Energy Agency's "Additional Protocol," the more intrusive inspection regime that the United Arab Emirates accepted in its 2009 "gold standard" deal.

Klein said Riyadh's strategic posture compounds the risk.

"Don't forget Saudi Arabia are strategic partners with our enemy China," he said, noting joint naval drills. He also alleged "two secret sections in this deal, which no one has seen," and demanded that they be released.

Klein pointed to Saudi Arabia's 2023 rapprochement with Iran, when he said the kingdom refused U.S. use of its bases during strikes on Iranian nuclear facilities and condemned the attacks.

"Even though Saudi Arabia is friendly with us now, thank God, things can change," he said.

He rejected criticism from Sen. Bernie Sanders, I-Vt., who said on X that Trump is letting "one of the most brutal dictatorships in the world" enrich nuclear fuel while waging war on Iran for the same reason.

"As usual, Bernie Sanders is completely wrong," Klein said, arguing enrichment is not yet permitted under the reported terms.

Klein also questioned Saudi commitments on Israel, recounting a visit during which he said officials told him not to wear anything identifying him as Jewish and displayed maps showing "no Israel in the Middle East, only Palestine."

Saudi leaders promised him they would change the maps, Klein said, but "haven't changed it to this minute."

The deal will require congressional review, where lawmakers in both parties have raised proliferation concerns.