World leaders and top diplomats gather in New York for the 71st session of the United Nations General Assembly. Ending the war in Syria, easing the plight of refugees and migrants across the globe, tackling the threat of terrorism and nuclear proliferation - those are just some of the issues on the agenda of the world’s biggest international body. Can the gathering of nations agree on how to act on these problems? Why is the veto right so important for maintaining a balance in UN decision-making? Should new permanent members be admitted to the UNSC? We ask Russia’s top diplomat in New York, Ambassador to the United Nations - Vitaly Churkin.