United Nations Chief Antonio Guterres on Tuesday called on Azerbaijan and Armenia to de-escalate tensions amid recent fighting which claimed lives on both sides. "The Secretary-General is deeply concerned about reports of renewed fighting along the Armenian-Azerbaijani border," his spokesman Stephane Dujarric said on Tuesday. UN Secretary-General Antonio Guterres has called for solidarity and cooperation to address a 'world in peril' https://t.co/zNVQZJd8tB pic.twitter.com/8NHiEZTTii — Al Jazeera English (@AJEnglish) September 14 ...