http://www.archives.gov/iwg/declassified-records/rg-263-cia-records/second-release-lexicon.pdf at page 63
The CIA provides the definition for WSSIREN as "Psychological Warfare", and the definition for WSSPEAR as "Political Warfare". In that context, the definition of Berlin as "WSCORNY" makes sense, as Berlin was a prime site for Cold War drama - some of it corny.
Philip Agee, Inside the Company, CIA Diary, p. 74. https://leaksource.files.wordpress.com/2014/08/inside-the-company-cia-diary-philip-agee.pdf
"The Economic Warfare Section of the PP (Psychological Warfare and Paramilitary) Staff is a subsection under Paramilitary Operations because its mission includes the sabotage of key ecomomic activities in a target country and the denial of critical imports, e.g. petroleum. Contamination of an export agricultural product or associated material (such as sacks destined for the export of Cuban sugar) or fouling the bearings of tractors, trucks or buses destined for a target country may be undertaken if other efforts to impede undesired trade fail."