[Investors Bus Daily] Iran: At the eleventh hour before the Tuesday deadline, Tehran negotiators predictably changed positions and demanded new concessions. Unfortunately, unlike Ronald Reagan, President Obama won't be walking away.As the world's leading terrorist sponsor state, which for years has sought nuclear weapons, backs Secretary of State John Kerry and negotiators for the other major powers into a corner, Americans should think back nearly three decades ago to a low-key former British Embassy in northern Reykjavik in Iceland.