Summary: Four bombs ripped through Shiite neighborhoods in Baghdad, killing at least 40 people and wounding nearly 100 in the worst violence the Iraqi capital has seen in months. … One-year retrospective: One year ago today, on June 23, 2010, Aubrey Immelman reported that President Barack Obama relieved Gen. Stanley McChrystal of command in the Afghanistan war, naming Gen. David Petraeus as his replacement.