Undated file picture shows late HM King Peter II of Yugoslavia (c) with his mother Queen Maria and KIng Alexander I of Yugoslavia. The remains of Yugoslavia's last king, Peter II Karadjordjevic, who died in the U.S. in 1970, were flown back to Serbia in a solemn ceremony. The former king fled the Nazi occupation of Yugoslavia at the start of World War II and never returned, as Communists took over at the end of the war, and he died in exile with his remains buried at a Serbian Orthodox monastery in Libertyville, Illinois, the only European monarch buried on U.S. soil. Belgrade, SERBIA-22/01/2013