▁of ▁gen o cide ▁by ▁the ▁Cro at ian ▁ult ra - n ational ist , ▁fasc ist ▁U st as he . ▁Jas en ov ac ▁camp ▁was ▁one ▁of ▁the ▁largest ▁ex termin ation ▁cam ps ▁in ▁Europe ▁and ▁it ▁has ▁been ▁referred ▁to ▁as ▁" the ▁Aus ch witz ▁of ▁the ▁B alk ans ". ▁The ▁present - day ▁pres idents ▁of ▁Cro atia , ▁St j ep an ▁M esi ć ▁and ▁I vo ▁Jos ip ović , ▁as ▁well ▁as ▁Bak ir ▁I zet beg ović , ▁Bos nia k ▁Member ▁of ▁the ▁Pres iden cy ▁of ▁Bos nia ▁and ▁Herz egov ina , ▁also ▁described ▁the ▁per sec utions ▁of ▁Ser bs ▁in ▁N D H ▁as ▁gen o cide . ▁S is ak ▁and ▁J ast re bar sko ▁concentration ▁camp ▁were ▁spe cially ▁formed ▁for ▁children . ▁D iana ▁Bud is av l je vić , ▁a ▁human itar ian ▁of ▁Aust rian ▁descent , ▁carried ▁out ▁rescue ▁operations ▁from ▁U st as he ▁cam ps ▁and ▁saved ▁more ▁than ▁ 1 5 , 0 0 0 ▁children , ▁mostly ▁Ser bs . ▁ ▁More ▁than ▁half ▁a ▁million ▁Ser bs ▁were ▁killed ▁in ▁the ▁territory ▁of ▁Y ug oslav ia ▁during ▁World ▁War ▁II . ▁Ser bs ▁in ▁occupied ▁Y ug oslav ia ▁subsequently ▁formed ▁a ▁resistance ▁movement ▁known ▁as ▁the ▁Y ug oslav ▁Army ▁in ▁the ▁Hom eland , ▁or ▁the ▁Ch et nik s . ▁The ▁Ch et nik s ▁had ▁the