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.

Iran’s government is extremely nervous and has been engaging in urgent diplomatic efforts with countries in the Middle East to gauge whether they can reduce the scale of Israel’s response to its missile attack earlier this month and – if that fails – help protect Tehran,

The U.S. on Friday announced new sanctions on Iran’s energy sector in response to its October 1 attack on Israel, firing roughly 180 missiles into the country