The U.S. State Department, via Marie Harf, is explaining Iran’s continued expansion of nuclear material with the same logic that President Obama applies to the U.S. Debt. and deficits.
Note to those harf-minded fools:

Half of something you triple, is not “less” (than you started with).

Carry on.
WASHINGTON DC – International inspectors report that Iran’s stockpile of nuclear fuel has increased about 20 percent over the past 18 months of negotiations, according to The New York Times.

The increase in Iran’s stockpile was based on a report issued Friday by the International Atomic Energy Agency, which monitors nuclear programs for the United Nations.
The report also said Iran had stopped producing certain types of highly enriched uranium since January, 2014 and halted work on facilities capable of producing nuclear bombs.
The Times noted that should negotiators finalize a deal before a June 30 deadline, Tehran would have to reduce its stockpile by more than 9 tons within months.
The newspaper also reported that Western officials and experts were unsure how or why Iran’s stockpile had increased. Some have speculated it was to give them leverage in talks.
The Obama administration has long maintained that Tehran’s nuclear program has been “frozen” as international negotiators work to secure a deal with new limits.
A deal brokered between the U.S., Britain, France, Germany, Russia and China with Iran would lift some sanctions on Iran in exchange for new limits on its nuclear program.
A framework outlined April 2 would force Iran to reduce its nuclear stockpile to 300 kilograms, or about 660 pounds.  (read more)