ian ▁Def ence ▁Council ▁( H VO ), ▁reporting ▁to ▁the ▁Bos nia k - domin ated ▁central ▁government ▁and ▁the ▁Bos n ian ▁Cro at ▁leadership ▁respectively . ▁The ▁H V ▁sometimes ▁deployed ▁to ▁Bos nia ▁and ▁Herz egov ina ▁to ▁support ▁the ▁H VO . ▁ ▁In ▁April ▁ 1 9 9 2 , ▁the ▁J NA ▁began ▁off ensive ▁operations ▁against ▁the ▁H V ▁and ▁the ▁H VO ▁in ▁areas ▁of ▁western ▁and ▁southern ▁Herz egov ina ▁near ▁Ku pres ▁and ▁St ol ac . ▁The ▁ 4 th ▁Military ▁District ▁of ▁the ▁J NA , ▁commanded ▁by ▁Str ug ar , ▁aim ed ▁to ▁capture ▁St ol ac ▁and ▁most ▁of ▁the ▁eastern ▁bank ▁of ▁the ▁N er et va ▁River ▁south ▁of ▁Most ar . ▁The ▁fighting ▁around ▁Most ar ▁and ▁J NA ▁art illery ▁attacks ▁on ▁the ▁city ▁started ▁on ▁ 6 ▁April . ▁The ▁J NA ▁pushed ▁the ▁H V / H VO ▁force ▁from ▁St ol ac ▁on ▁ 1 1 ▁April ▁and ▁Č ap lj ina ▁came ▁under ▁J NA ▁fire . ▁A ▁ce ase fire ▁was ▁arranged ▁on ▁ 7 ▁May ▁but ▁the ▁J NA ▁and ▁the ▁Bos n ian ▁Ser b ▁forces ▁res umed ▁the ▁attack ▁the ▁next ▁day . ▁The ▁attack ▁succeeded ▁in ▁capt uring ▁a ▁large ▁part ▁of ▁Most ar ▁and ▁some ▁territory ▁on ▁the ▁western ▁bank ▁of ▁the ▁N er et va ▁River . ▁On ▁ 1 2 ▁May , ▁the ▁J NA ▁forces ▁based ▁in ▁Bos nia ▁and