A classified preliminary U.S. intelligence report suggested that the Trump administration’s initial assessment of damage to Iran’s nuclear program from U.S. strikes was overblown. An assessment from the Defense Intelligence Agency,

The US military strikes on three of Iran’s nuclear facilities last weekend did not destroy the core components of the country’s nuclear program and likely only set it back by months, according to an early US intelligence assessment that was described by three people briefed on it.

Exact assessments of the damage — which require access to the sites that Iran is unwilling to grant — may never take place.