U.S. intelligence agencies continue to believe that Iran has yet to decide whether to make a nuclear bomb even though it has developed a large stockpile of the enriched uranium necessary for it to do so, according to intelligence and other American officials.

That assessment has not changed since the intelligence agencies last addressed the question of Iran’s intentions in March, the officials said, even as Israel has attacked Iranian nuclear facilities.

Senior U.S. intelligence officials said that Iranian leaders were likely to shift toward producing a bomb if the American military attacked the Iranian uranium enrichment site Fordo or if Israel killed Iran’s supreme leader.

The question of whether Iran has decided to complete the work of building a bomb is irrelevant in the eyes of many Iran hawks in the United States and Israel, who say Tehran is close enough to represent an existential danger to Israel. But it has long been a flashpoint in the debate over policy toward Iran and has flared again as President Trump weighs whether to bomb Fordo.

White House officials held an intelligence briefing on Thursday and announced that Mr. Trump would make his decision within the next two weeks.

At the White House meeting, John Ratcliffe, the C.I.A. director, told officials that Iran was very close to having a nuclear weapon.