The Secretary of Iran’s National Security Council threatened Sunday that an Israeli attack on his country’s nuclear sites will be met by a “devastating” response.

Ali Shamkhani, who has the rank of an admiral in the IRGC Navy, tweeted in Persian and Arabic referring to new reports that Israel has appropriated an additional $1.5 billion budget to confront Iran’s nuclear threat.

Shamkhani wrote that instead of spending the money on “mischief” Israel should prepare to spend tens of billion of dollars to rebuild after a “decisive” attack by Iran.

Israel media had reported on October 18 that the additional money set to be approved by the government in November, would pay for aircraft, intelligence-gathering drones and armaments needed for a strike against hardened Iranian nuclear targets.

Iran has suspended negotiation with world power over restoring the 2015 nuclear agreement knowsn as JCPOA since June as it enriched uranium and building a stockpile that could reduce the time for building a nuclear device.

Israeli officials have warned on several occasions since August that if no options are left they would "go it alone" to stop Iran from acquiring nuclear weapons.