Source: Immanuel Wallerstein
Blowback is a term coined by the U.S. Central Intelligence Agency (CIA) that originally meant the unintended negative consequences to a country of its own espionage operations. For example, if a secret CIA operation led to a revenge attack on U.S. individuals who were unaware of the CIA’s operation, this was considered “blowback.” But these days, many of the operations are not all that secret (for example, the U.S. use of drones in Pakistan or Yemen). And the “revenge” attacks are often publicly avowed. Nevertheless, countries don’t seem to cease engaging in such operations.