A senior Islamic Revolutionary Guard Corps (IRGC) commander said on Sunday Iran will “certainly” launch a new attack against Israel, a day after Iran’s Supreme Leader Ali Khamenei vowed a harsh retaliation.

“Details cannot be discussed, but it will certainly be carried out,” Ali Fadavi, the IRGC’s deputy commander in chief, was cited as saying by Iran’s semi-official ISNA news agency.

ISNA said the possible attack is expected to be named “Operation Honest Promise 3,” in line with the previous missile strikes on Israel in April and October.

On Saturday, Supreme Leader Khamenei said Tehran and its regional allies would deliver a “crushing response” to Israel, as well as its ally US, after Israel’s attack on the Islamic Republic last week.

Israeli warplanes carried out deadly strikes on Iranian military facilities on October 26 in what Israel said was retaliation for Tehran’s October 1 missile barrage, which Iran had in turn described as a reprisal for the killing of Iran-backed militant leaders and an IRGC commander.

After the strikes on the Islamic Republic, Israeli Prime Minister Benjamin Netanyahu said they “hit Iran’s defense capabilities and missile production.”

Iran’s armed forces said the attack killed four military personnel and caused “limited damage” to a few radar systems. Iranian media said a civilian was also killed.