Because the IAEA has underscored, again and again, that it has a full accounting of Iran's nuclear material stockpile.
As former National Security Council official Philip Gordon has pointed out, if this deal is rejected, Iran's nuclear program will be unconstrained: "Kill that deal, and tomorrow Iran can resume enrichment including to higher levels, keep its fissile material stockpile, finish building its heavy water reactor and do unlimited R&D, all without transparency or international supervision".
The prototype light-water reactor that North Korea is constructing at Yongbyon, and which requires enriched-uranium fuel, could add to the fissile material stockpile when it is completed, possibly by the end of the year.
Under Putin, Russia has steadily cut back its overall nuclear security cooperation with the United States, arguing that it no longer needs Washington's financial or technical assistance to safeguard its own fissile material stockpile.
To justify its weapons program, North Korea cites the five tons of radioactive material now stockpiled in Japan.
The material was stockpiled in the open air and no washing, drying or decontamination process was carried out.
Depending on the shape of the deposit and the intended design of the pit, a desirable option may be to place it directly in the free spaces within the pit, instead of storing all waste and tailings materials in stockpiles and/or waste/tailings dumps.
With regards to other medical materials, 87.5% had stockpiles of emergency materials (e.g., food, water, stretcher, and tourniquet).
Perhaps the crucial unanswered question, experts agreed, was whether the terrorists had produced a small quantity of high-quality material or had stockpiles.
It also bought and stockpiled material by the carload.
