Does the United Nations need a makeover?

World leaders gather in New York for the annual United Nations General Assembly.

Leaders from the UN's 193 member states are in New York for the annual meeting of the UN's General Assembly.

It is an opportunity to set out their agenda for the upcoming session.

And there is a lot to do this year, including finding a replacement for outgoing UN Secretary General Ban Ki-Moon.

But as has been the case in recent years, the war in Syria will take centre stage, along with the refugee crisis and climate change.