The sophisticated equipment destroyed in the attack was essential for shaping and testing plastic explosives that encase uranium in a nuclear device.

The Israeli strike on Iran's Parchin military complex in late October will make it much harder for Iran to develop a nuclear explosive device if it chooses to do so, two Israeli officials told Axios.

The Israeli attack on Iran in late October destroyed an active top secret nuclear weapons research facility in Parchin, according to three U.S. officials, one current Israeli official and one former Israeli official.

The news outlet quoted the American and Israeli authorities as claiming that Israeli airstrikes damaged an "active secret nuclear weapons research facility" in Parchin, Iran. The authorities argued that this was a significant loss that the country had to endure and a major setback in Tehran's efforts to restart its nuclear weapons research program.