Briefing you on all you need to know in global news, business and sport. And you can be part of the conversation. Police in china have started using sunglasses featuring facial Recognition Technology it allows officers to scan crowds looking for suspects. A modern tool in the fight against crime . Or does it smack of big brother surveillance . Tell us what you think just use the hashtag bbc the briefing. The recent apparent thaw in relations between north and south korea looks to be taking a backwards step. The North Koreans have now said they have no intention of using the Winter Olympics as a chance to meet american delegates and they are also preparing a huge parade of their military prowess. But the us Vice President mike pence reiterated that all options are on the table. In a speech at a us air base injapan he said his country and its allies were striving to peacefully dismantle north Koreas Nuclear programme and alleviate the suffering of its people. Hes already said the us will