The principal objective of international sanctions, to compel Iran to reach an agreement that ensure that its nuclear program can only be used for civilian purposes, has not been achieved to date. However, the international community has imposed progressively strict sanctions on Iran's key economic sectors, harming Iran's economy to the point where key Iran leaders may be considering a nuclear compromise. As Iran's nuclear program has been increasingly identified as a potential threat to stability in the Middle East and global energy supplies, the international community has joined U.S. sanctions to try to force Iran to verifiably demonstrate that the program is for purely peaceful purposes. This book analyses U.S. and international sanctions against Iran and, in so doing, provides examples, based on a wide range of open source reporting, of companies and countries that conduct business with Iran.