Mark S. Zaid @MarkSZaidEsq
There's a surprise ending to this story about WWI invisible ink formulas. — PolitiTweet.org
National Security Counselors @NatlSecCnslrs
TIL (from @beautfc) that Tucker Carlson did a bit about CIA's 2011 declassification of German WWI secret ink recipe… https://t.co/nPGXCSvMkl