Synopsis

**The Spymaster Speaks:** As the prospect of a nuclear-equipped Iran enters the political discourse of an election year, Meir Dagan, former head of Israel's intelligence agency, shares his perspective on the Iranian nuclear issue in conversation with Lesley Stahl. **Teacher to the World:** Through his online platform, Khan Academy, Sal Khan imparts knowledge to millions of students globally each month. His innovative teaching approach has gained such prominence that it may represent the futur