he European Union's announcement Monday that it will embargo Iranian oil and further restrict trade with the Islamic Republic is only the latest step in an extensive and growing international campaign aimed at destabilizing the regime in Tehran.
In addition to openly acknowledged moves, such as sanctions, the web of pressure against Iran also includes a slew of mysterious incidents, such as assassinations, explosions and computerized sabotage, according to analysts who follow the country closely.
It's clear who is behind the overt moves to tighten the screws on Iran's economy -- mainly the United States and its European allies -- but just who is behind the covert activities remains a mystery.
In some cases, Iran blames Israel. Israel generally does not comment on such speculation.
More here: Sabotage, bombings, sanctions: A growing web of pressure over Iran - CNN.com