The U.S. assessment is based on conversations between U.S. and Israeli officials that happened before Iran fired more than 300 drones and missiles at Israel on Saturday night.
As Israel was preparing for a possible Iranian attack last week, Israeli officials briefed U.S. officials about possible response options, the U.S. officials said.
The U.S. officials stressed that they have not been briefed on Israel’s final decision about how it will respond and that the options could have changed since the weekend attack. They also said that it is not clear when an Israeli response will happen but that it could happen at any time.