(Axios) Pro-Iranian account leaks alleged U.S. intel on Israel’s attack plans. Quoting,

The alleged report details measures that have been carried out in recent days at several Israeli Air Force bases, including the transfer of advanced munitions which, according to the report, were intended for an attack on Iran.

Superstrength concrete was developed in the U.S. in the early       1960’s for construction of missile silos.  Various additives, such as polymers and quartz can produce a concrete many times stronger than the basic mix of lime and aggregate. The most basic additive is plastic; many other additives, such as carbon fiber, can be included. See polymer concrete.

Some estimates suggest that Iran has continued development of this material, and now has the most advanced concrete technology in the world. This poses an issue for U.S. non-nuclear bunker-buster munitions; some estimates put Iran’s nuclear facilities beyond the range of bunker-busters, due to a combination of mountainous overburden and superstrength concrete.

Bunker-busters are old technology. Even the rocket-accelerated kind, designed for carriage on tactical aircraft, descends from British bombs developed in World War II. But there is some suggestion that within the past decade, some programs in this area have gone black.

Quoting from (CNN) Leaked documents show US intelligence on Israel’s plans to attack Iran, sources say ,

Another US official said that “these two documents are bad, but not horrible. The concern is if there are more.”

Knowledge of what Iranian structures are vulnerable to U.S. conventional bunker busters, some of which may be in black development, is critical indeed.

It appears this information was leaked, not sold. The risk of leaks is greatest when there is associated moral ambiguity. While there is little ambiguity of public opinion towards Iran, public opinion displays a significant Gaza dissonance. A skilled operator driven by conscience is very hard to catch.