Summary: <p>The European Central Bank president vowed to "do whatever it takes" to protect the euro. His promise quickly sent global markets soaring. Syrian rebels say government forces continue a ground and air assault on the nation's largest city. The Egyptian president chose an American-educated prime minister, not a member of the Muslim Brotherhood. North Korea introduces its new first lady. The wife of fallen Chinese politician Bo Xilai faces a possible death sentence in the murder of a British businessman. And bells peal across Britain as the Olympic Games get underway. Soraya Sarhaddi Nelson of NPR, Warren Strobel of Reuters and Elise Labott of CNN join Diane for analysis of the week's top international news stories.</p>
