As Cologne prepares for New Year’s Eve a year after a spate of sexual assaults, officials are considering ramping up security with helicopters, video surveillance and restricted entry to certain places, according to a media report. A group of experts from state and federal police have been analyzing the events of New Year’s Eve last year under a project called “Silvester” — meaning New Year’s Eve in German. Their final report is set to be discussed at a conference of interior ministries starting on Tuesday, and Cologne’s Express newspaper obtained a copy of the police recommendations, the newspaper reported on...