Final War, The (1960)

aka’s: World War III Breaks Out/Dai-Sanji Sekai Taisen: Yonju-Ichi Jikan No Kyofu/World War III: 48 Hours Of Fear/
第三次世界大戦 四十一時間の恐怖

After a U.S. Air Force plane accidentally drops a nuclear bomb on North Korea, that communist country, with the assistance of China and the Soviet Union, prepares for war with the USA. Meanwhile in Tokyo, Japan, a newspaper reporter covers the mobilization of the American troops at a nearby airbase while his nurse-girlfriend prepares with civil defense in the impending nuclear holocaust. Stars Tatsuo Umemiya, Yoshiko Mita and Yayoi Furusato. (In Japanese language and in widescreen format).