A special session of the UN General Assembly to mark the 60th anniversary of the liberation of Auschwitz has been held in New York.
The session opened with a moment of silence followed by an address by UN Secretary-General Kofi Annan.
Mr Annan said that the evil that destroyed six million Jews, and others, during the Holocaust is one that still threatens the world today.
He told world leaders that terrible things are happening today in Darfur in Sudan and he asked the Security Council to take action and identify if possible the gross violations of human rights there.
Later this week, some 2,000 survivors of the Auschwitz-Birkenau concentration camp plan to gather alongside world leaders and Red Army soldiers to mark the 60th anniversary of the liberation of the camp by Soviet troops.