The United Nations has confirmed nearly 260,000 people died in Somalia’s 2011 famine, nearly 5 percent of the country’s population. Half of the dead were young children. In a report, the United Nations faulted global inaction for worsening the crisis, saying the world failed to heed early warnings. The United Nations also singled out the militant group al-Shabab, which banned aid workers from critical areas where many died.