U.S. backtracks on nuclear stockpile secrecy

Still from an important 1964 documentary on nuclear one-upsmanship.

Steven Aftergood of Secrecy News writes, "In May 2010, the Department of Defense disclosed that the U.S. nuclear weapons arsenal consisted of 5,113 warheads (as of September 30, 2009). This was a disclosure of great significance," and "an unprecedented breakthrough in secrecy reform," being the first time America had disclosed the current size of its nuclear arsenal. 

The Obama Administration’s promise to be “the most transparent Administration ever” is often viewed ironically in view of the perceived prevalence of overclassification. But when it comes to nuclear stockpile secrecy (and at least a few other important topics), that promise was fulfilled quite literally.
How so? Today, the size of the U.S. nuclear arsenal today is once again classified. Read more: Pentagon Reverts to Nuclear Stockpile Secrecy - Secrecy News.