INTERVIEW - U.N. refugee boss says world tackling past failures

GENEVA (Reuters) - The international community has woken up to the tragedy of the millions who are refugees in their own country and begun to act, the head of the United Nations' refugee agency said on Tuesday. 

Internal refugees -- known as internally displaced people (IDPs) -- number 20 to 25 million, more than double the nine million refugees who are recognised as such because they have crossed a border, and their plight is often just as bad, said U.N. High Commissioner for Refugees Antonio Guterres.