Serbian Minister without portfolio Nenad Popovic said on Tuesday that the time is right to take the Kosovo issue back to the United Nations after the European Union failed in its moderation efforts, Serbian media reported. “The EU has failed as moderator in the negotiations between Belgrade and Pristina and now is the right moment to return the Kosovo issue back where it belongs – the UN,” Popovic said in Moscow. He is part of the delegation that Serbian President Aleksandar Vucic has brought with him to the Russian capital. The minister also told Belgrade=based Prva TV the great powers – the United States, Russia and China – should be included in searching solution to the problem.