▁been ▁intended ▁to ▁communicate ▁to ▁the ▁Al lies ▁a ▁ref us al ▁to ▁surrender , ▁the ▁P ots dam ▁ult imat um ▁never theless ▁allowed ▁for ▁only ▁one ▁acceptable ▁answer : ▁un cond itional ▁surrender . ▁Any ▁other ▁answer ▁would , ▁as ▁the ▁declaration ▁war ned , ▁cause ▁" prom pt ▁and ▁utter ▁destruction ". ▁It ▁was ▁only ▁after ▁the ▁destruction ▁of ▁H iro sh ima ▁and ▁Nag as aki ▁by ▁atomic ▁bomb s , ▁two ▁assass ination ▁attempts ▁on ▁the ▁then ▁Prime ▁Minister ▁Su zu ki ▁Kant ar ō , ▁an ▁attempted ▁military ▁coup ▁against ▁the ▁Emperor ▁( the ▁Ky ū j ō ▁Inc ident ), ▁and ▁a ▁declaration ▁of ▁war ▁by ▁the ▁Soviet ▁Union ▁that ▁the ▁Emperor ▁himself ▁broadcast ▁accept ance ▁of ▁the ▁terms ▁of ▁the ▁P ots dam ▁Dec laration , ▁i . e ., ▁un cond itional ▁surrender , ▁ending ▁the ▁Pacific ▁War . ▁ ▁Post war ▁controvers y ▁Some ▁years ▁after ▁the ▁war , ▁it ▁was ▁claimed ▁that ▁it ▁was ▁question able ▁whether ▁the ▁Japanese ▁press ▁had ▁acted ▁on ▁reliable ▁government ▁sources ▁when ▁they ▁first ▁announced ▁that ▁the ▁Dec laration ' s ▁terms ▁had ▁been ▁re buff ed . ▁This ▁position ▁was ▁out lined ▁in ▁ 1 9 5 0 ▁in ▁an ▁English ▁article ▁by ▁K azu o ▁K aw ai , ▁who ▁based ▁his ▁argument ▁on ▁notes ▁and ▁di aries ▁written ▁at ▁the ▁time , ▁notes ▁taken ▁while ▁he ▁covered ▁the ▁discuss ions ▁under way ▁in ▁Japan ' s ▁Foreign ▁Office ▁regarding ▁the ▁Dec laration . ▁K