The United States just told Netanyahu that the US will not back Israel if it decides to do a counterattack on Iran, as we read in Axios:

President Biden told Israeli prime minister Benjamin Netanyahu during a call on Saturday that the U.S. will oppose any Israeli counterattack against Iran, a senior White House official told Axios.

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Behind the scenes: Biden told Netanyahu the joint defensive efforts by Israel, the U.S. and other countries in the region led to the failure of the Iranian attack, according to the White House official.

“You got a win. Take the win,” Biden told Netanyahu, according to the official.
The official said that when Biden told Netanyahu that the U.S. will not participate in any offensive operations against Iran and will not support such operations, Netanyahu said he understood.

U.S. Secretary of State Lloyd Austin spoke on Saturday with his Israeli counterpart Yoav Gallant and asked that Israel notify the U.S. ahead of any response against Iran, a senior Israeli official said.