лист-бомба, бомба в конверті, поштова бомба
parcel out calls
parcel
parcel tanks
Military Postal Service Agency
postal and courier services
postal operations management
postal support
central postal directory
bomb Voronezh (in response to sanction etc.)
work in the mail room of Germany's Federal Intelligence Service
V mail
mail and records division
mail dispatch
mail distribution agency
mail terminal
dead letter-box
letter of instruction
letter order
letter of agreement
letter of commendation
action letter
immediate action letter
call letter
speed letter
recruitment letter
command letter
circumstantial letter
commendatory letter
Mike (letter M in the phonetic alphabet)
Air Force letter
one-time report (on status of equipment etc.)
Russian New Generation Warfare (RNGW) (4th Generation Warfare, Hybrid War etc.)