U.N. Secretary-General Ban Ki-moon says he will head a new task force to tackle the global food crisis that is plunging tens of millions of people into poverty and hunger.

Before the Queen spoke, she was welcomed by UN Secretary General Ban Ki-moon, who said that in "a churning and changing world", she was "an anchor for our age".

But United Nations Secretary General Ban Ki-moon says the Copenhagen Accord is only a beginning.

In his latest report to the Security Council, U.N. Secretary-General Ban Ki-moon has expressed his deep concern over election preparations being behind schedule.

However, the UN secretary general, Ban Ki-moon, said today that a delay of a year before a legally binding treaty was signed would be too long, given the threat posed by greenhouse gas emissions.