▁of ▁the ▁IM RO ▁in ▁Bulg aria ▁were ▁completely ▁destroyed . ▁Form er ▁IM RO ▁members ▁were ▁h unted ▁by ▁the ▁commun ist ▁Milit si ya ▁and ▁many ▁of ▁them ▁imprison ed , ▁repr essed , ▁ex iled ▁or ▁killed . ▁On ▁the ▁other ▁hand , ▁former ▁Mih ail ov ists ▁were ▁also ▁per sec uted ▁by ▁the ▁Bel grade - control led ▁authorities ▁on ▁accus ations ▁of ▁collaboration ▁with ▁the ▁Bulgar ian ▁occupation , ▁Bulgar ian ▁national ism , ▁anti - comm un ist ▁and ▁anti - Y ug oslav ▁activities , ▁etc . ▁Jos ip ▁Bro z ▁T ito ▁and ▁Georg i ▁Dim it rov ▁worked ▁on ▁a ▁project ▁to ▁merge ▁Bulg aria ▁and ▁Y ug oslav ia ▁into ▁a ▁B alk an ▁Feder ative ▁Republic ▁under ▁control ▁of ▁the ▁B alk an ▁Commun ist ▁Federation . ▁These ▁policies ▁were ▁revers ed ▁after ▁the ▁T ito - St alin ▁split ▁in ▁June ▁ 1 9 4 8 , ▁when ▁Bulg aria , ▁being ▁sub ordin ated ▁to ▁the ▁interests ▁of ▁the ▁Soviet ▁Union ▁took ▁a ▁st ance ▁against ▁Y ug oslav ia . ▁After ▁the ▁Second ▁World ▁War ▁many ▁former ▁" Oh ran ists " ▁were ▁conv icted ▁of ▁a ▁military ▁cr imes ▁as ▁collaboration ists . ▁Also , ▁after ▁the ▁Greek ▁Civil ▁War ▁many ▁of ▁these ▁people ▁were ▁exp elled ▁from ▁Greece ▁and ▁tort ured ▁as ▁Bulg ari ans . ▁ ▁Grad ually ▁Ivan ▁Mih ail ov ▁was ▁established ▁as ▁a ▁legal ▁political ▁figure ▁and ▁author ▁of ▁the ▁ide ology