An Associated Press investigation of U.N. missions during the past 12 years found nearly 2,000 allegations of sexual abuse and exploitation by peacekeepers and other personnel around the world. More than 300 of the allegations involved children. Only a fraction of the alleged perpetrators served jail time. In Haiti, at least 134 Sri Lankan peacekeepers exploited nine children in a sex ring from 2004 to 2007, according to an internal U.N. report. 114 peacekeepers were sent home. None was ever imprisoned. In March, U.N. Secretary-General Antonio Guterres announced new measures to tackle sexual abuse. But the proclamation had a depressingly familiar ring: More than a decade ago, the United Nations commissioned a report that promised to do much the same thing, yet most of the reforms never materialized. For a full two years after those promises were made, the children in Haiti were passed around from soldier to soldier. And in the years since, peacekeepers have been accused of sexual abuse the world over. The AP found that some 150 allegations of abuse and exploitation by U.N. peacekeepers and other personnel were reported in Haiti alone between 2004 and 2016. Aside from the Sri Lankan sex ring in Haiti, some perpetrators were jailed for other cases. Alleged abusers came from Bangladesh, Brazil, Jordan, Nigeria, Pakistan, Uruguay and Sri Lanka. More countries may have been involved, but the United Nations only started disclosing alleged perpetrators' nationalities after 2015.