The US says there's still a real risk of Iran or its allies attacking Israel, following a recent attack by Hezbollah.
Hezbollah, a Lebanese group backed by Iran, launched a wave of rockets and drones at Israel over the weekend.
Iran has been threatening retaliation for the deaths of several of its officials in Tehran and Beirut, which they blame on Israel.
The US is supporting Israel by sending two large aircraft carrier groups to the region and sharing intelligence.
