Iran sent a message to the Biden administration through several Arab countries earlier this week: if the U.S. gets involved in the fighting between Israel and Iran.
The Iranian supreme leader has threatened "punishment" for Israel but through private channels Iran has signaled it would be limited.
Israel and the U.S. think an Iranian attack would include the launch of ballistic missiles, cruise missiles and attack drones from Iran to Israeli territory.
U.S. officials say the Biden administration asked Israel to notify the U.S. and for the U.S. to have a say before decisions are made about any retaliation by Israel.
