Iran War Draws Nuclear Superpowers CloserBy Bryan SmithThe war with Iran is no longer simply a conflict between Washington and Tehran. The Iran war has become a striking example of that competition. The world’s most powerful nations can become increasingly entangled in the same war long before their militaries directly confront one another. Economic interests can become threatened. A war involving Iran now affects American military power, Russian strategic interests, Chinese energy security, global shipping lanes and the world economy.