More than six months after the attacks, a leaked document revealed that more than 2,000 men allegedly assaulted 1,200 German women — including 600 in Cologne and 400 in Hamburg — on New Year’s Eve. German officials took days to acknowledge the coordinated attacks against women during New Year’s Eve celebrations around the country, and only then said that hundreds of women had been victims. The number, according to a report leaked to Germany’s Sueddeutsche Zeitung newspaper, is instead in the thousands. As the calendar year turned, approximately 1,000 men set off fireworks in Cologne and then separated into groups...