Let's set up the geopolitical chess board for a moment. Iran is a rogue nation according to the Western world. Which basically means that they sit on a sea of oil and don't comply with the demands of the Western-based multinational oil firms. Iran has also made strong alliances with America's oil-thirsty quasi-enemies China and Russia, while finding a partner-in-rogue in Venezuela.
To further aggravate the West's agenda for global dominance, Iran's banking system is not compliant with the private international banking cartel, therefore they can't be enslaved by debt -- the preferred method of ensuring nonviolent compliance. However, the West has recently captured a banking pawn by blacklisting the Iran-owned German-based EHI Bank under the authority of economic sanctions and accusations of benefiting from "weapons proliferation."