Donald Trump was given blunt assessments about the risks and potential rewards of a US attack on Iran, according to a Reuters report.
Ahead of the strikes, the US president received multiple briefings from officials including CIA director John Ratcliffe, US General Dan Caine, the chairman of the Joint Chiefs of Staff, Secretary of State Marco Rubio and Defense Secretary Pete Hegseth.
Admiral Brad Cooper, who leads US forces in the Middle East as the head of Central Command, also flew to Washington on Thursday to join discussions in the White House Situation Room.
One US official said those who briefed the president warned military action could lead to major US casualties but also a generational shift in the Middle East in favour of US interests.
The joint US-Israeli operation was presented as a high-risk, high-reward scenario, they added.
A second US official said that prior to the strikes, the White House had been briefed on a number of risks associated with operations against Iran, including retaliatory strikes on multiple US bases in the region by Iranian missiles that could overwhelm defenses, as well as Iranian proxies attacking US troops in Iraq and Syria.
Both US officials requested anonymity due to the sensitivity of the internal discussions.
The White House and Pentagon have not commented on the report.