The Obama Administration has approved more than a $100 billion in arms sales to the Middle East alone over the last two years. We’ll look at why weapons are among the U.S.’s leading exports. Then, Mackenzie Phillips talks about her complex relationship with her father, Mamas and Papas singer John Philips. Also, computer scientist Zachary Mason describes his creative re-imagining of Homer’s Odyssey. Plus, we’ll look at how, for most of its people, Russia has changed and yet remained the same since the fall of communism.