Cologne, on edge since sex assaults, beefs up carnival security

Cologne is on high alert ahead of its giant carnival festivities since a shocking spate of sexual assaults, with German authorities anxious to prevent a repeat of the rampage and ward off potential jihadist attacks. Around 1,000 complaints have been filed over the crime spree that has also ignited an intense debate about Germany's ability to integrate 1.1 million asylum seekers it took in last year. The carnival festivities kick off on Thursday with street parties -- a week-long binge of beer, s