Israel is on heightened alert after the United Nations reinstated sanctions on Iran under the snapback mechanism, amid fears in Jerusalem that Tehran could accelerate its nuclear activities, Ynet reported on Sunday.

Israeli security officials told the outlet that Iran’s leadership appeared increasingly anxious following the move, raising the risk of “miscalculation” that could spark further confrontation.

The sanctions, which restore an arms embargo, bans on uranium enrichment and ballistic missile activity, asset freezes and travel restrictions, were reimposed after the Security Council rejected a Russia–China proposal to delay them.

The report added that the recent conflict with Iran bolstered international support for sanctions but left open the risk of renewed escalation.

“Iran is still a power,” a senior Israeli official was quoted as saying. “Khamenei could decide tomorrow morning to race for the bomb at any cost.”

Ynet said Israeli officials acknowledged that while the strikes disrupted Iran’s nuclear and missile programs, Tehran retains sufficient material to potentially produce a weapon within a year.

They warned the snapback sanctions, combined with Iran’s missile tests and rebuilding efforts, meant Israel must remain vigilant.