Analysts from across the U.S. intelligence community have been finalizing a revised national intelligence estimate (NIE) that is expected to bring the United States more into line with its European allies about the state of Iran’s nuclear program.

The key assertions of the 2007 NIE — that Iran halted its nuclear weapon design and weaponization work, as well as its covert uranium conversion and uranium enrichment related-activities in 2003 — have long been disputed by some European spy agencies.

U.S. officials have signaled that at least some of those 2007 assertions will require revision. But they expected nuanced rather than wholesale changes to the assessment in the new NIE, which could be completed within weeks.

“Basically, we’re talking about research (resuming) — not about the Iranians barreling full steam ahead on a bomb program,” a U.S. official said on condition of anonymity.