The White House says it understands that Israel is conducting the strikes in Iran as an "exercise of self-defence".
"We understand that Israel is conducting targeted strikes against military targets in Iran as an exercise of self-defence and in response to Iran’s ballistic missile attack against Israel on October 1," a National Security Council spokesman tells the BBC's US news partner CBS.
'No US involvement' - Pentagon
The US had no involvement in Israel's strikes in Iran early on Saturday, a US defence official told the BBC, adding that Washington had been informed of the operation beforehand.
