pThe German government's main challenge for this year will be to integrate the 1.1 million asylum seekers who arrived in the country in 2015. There are worries about how much the new arrivals will cost and the New Year's Eve sex attacks in Cologne and other cities have added to concerns about assimilation. Anne Maillet and Sarah Morris report.pbr A programme prepared by Patrick Lovett, Laura Burloux and Claire Pryde.