Peace negotiations between Russia and Ukraine failed to start as planned on Thursday after the two presidents did not turn up and barbs were traded from afar.Hopes for an end to the over three-year war looked forlorn as Ukrainian President Volodymyr Zelensky confirmed he will not take part in the Istanbul talks, which now look set to begin on Friday if at all.Zelensky had demanded that Russian counterpart Vladimir Putin be present at the negotiations in Turkey's biggest city and labelled Moscow's negotiating team as second rate.Russian Foreign Minister Sergei Lavrov, also not in Istanbul, referred to Zelensky as a...