Fastest way to let Russia, N Korea, China, etc find out.
No sense making them wait til their spies pass the information to them.
That bomb has existed in the U.S. munitions inventory for some decade or more. Perhaps, however, the connections the Russians have with the new Administration were (have?) allowed them to obtain the device's performance specs. If so, then, yes, I suppose disclosing the information to all obviates the need for the spies in question to bother obtaining it, thus freeing them up to do other things.
doesn't surprise me a bit someone would take that view of my post.
Foreign Leader (country optional): What was that, a major earthquake?
Foreign spy: dont' know, we'll find out.
(hours later)
Foreign spy: Leader, the Americans dropped a bomb in Afghanistan.
NO need to waste all that time, TELL them we just the M(F)OAB.
(considering the last 3 presidents, the odds they didn't have the specs is remote)