Summary: President Obama in Europe for a G8 summit, his first Berlin trip since 2008, the U.S. attempts peace talks with Afghanistan and the Taliban, progress on immigration reform and farm bill failure, and the NSA disclosed that they foiled more than 50 terrorist attacks. Joining Gwen: Peter Baker, New York Times; Indira Lakshmanan, Bloomberg News; Ed O’Keefe, Washington Post; Tom Gjelten, NPR.