When 30-year-old Jack Dorsey founded Twitter in 2006, he had no way of knowing the platform would become one of the leading ways our world views and understands foreign conflict. Just five years after Twitter went live, Abbottabad resident Sohaib Athar made history by unwittingly live-tweeting Osama bin Laden’s assassination. Athar’s social media post scooped the cable news media by a mile. Over the weekend, social media again served as the world’s eyes and ears during a brutal terrorist attack in Israel that involved more than a thousand members of Palestinian Islamist group Hamas. The videos and images that emerged...