The cricket world woke up to shocking news Thursday. One of cricket's biggest stars, Sachin Tendulkar of India, announced he's retiring from the sport. For cricket, it's like LeBron James calling it quits.
Cities are centers of culture, but they're also increasingly home turf for militant warfare. That's what counter-insurgency guru David Kilcullen argues in his new book Out of the Mountains: The Coming of Age of the Urban Guerrilla.