After world powers reached a preliminary agreement with Iran in April that is meant to prevent it from developing nuclear weapons, Russia quickly unblocked the delivery of sophisticated S-300 missile defense systems to the country.
The weapons system could reduce the scope of Israeli and possibly Saudi attacks on Iranian nuclear facilities. Both states have expressed discontent with the nuclear talks which they feel do not go far enough to stop Iran’s program.
Russia originally suspended the delivery of the S-300s in 2010 in support of an international effort to force Iran to the negotiating table, despite it having already paid $167 out of $800 million for the systems.
In January, a Russian military official was quoted saying Iran could possibly get the even more advanced S-400 air defense system, suggesting that the decision to supply the S-300s was made before significant progress was made in the nuclear talks in Lausanne, Switzerland three months later.
Russia’s decision to arm Iran is informed by at least two factors. (more…)

