U.S. officials believe Israel has narrowed down what they will target in their response to Iran’s attack, which these officials describe as Iranian military and energy infrastructure.

There is no indication that Israel will target nuclear facilities or carry out assassinations, but U.S. officials stressed that the Israelis have not made a final decision about how and when to act.

The region has been on edge awaiting Isreal’s response to an Iranian missile barrage launched on Oct. 1, which…