Why This Topic Landed in Japan

At a forum in Seoul, former Prime Minister Shigeru Ishiba floated a Japan-Korea-centered multilateral security framework — an "Asian NATO" — and Korean media reported wariness, summed up as "don't trust Japan." Separately, after a US think tank argued for scaling back the US-Japan alliance, an analyst at Britain's Royal United Services Institute (RUSI) commented that if the US withdrew its defense guarantee, Japan would have to acquire nuclear weapons. That is a policy argument from researchers, not government policy and not an inevitable outcome. But for a security-minded slice of the Japanese internet it fed an existing debate over whether an independent deterrent should stay taboo while the credibility of the US nuclear umbrella looks shaky. Longstanding distrust of Korea — and a sense that a multilateral framework is already forming without it — did the rest.

Key Reaction Themes

  • Distrust of the proposal and of Korea led the reaction — Most dismissed the framework outright: NATO itself is "a mess," so Korea "can't be trusted," and Japan's own multilateral network is seen as "already being built, without Korea."
  • The nuclear question split between "realistic option" and "unworkable" — Some called an independent deterrent a reasonable, cheap outcome; others argued Japan would be crushed by sanctions and force before it could arm, and that war would begin the moment development was detected.
  • Cynicism and a wish to stay out of it — A smaller strand shrugged the whole thing off: "let the people who want a war have one," or "we'd just switch from bankrolling the US to bankrolling China."

What Japanese Netizens Are Saying

Ishiba's "Asian NATO" proposal and Korea's wariness

Ishiba pitched a Japan-Korea-centered multilateral security framework, and Korean reactions were reported as "don't trust Japan."

yochan
yochan
@nondakure56
·

石破茂氏が日韓中心の「アジア版NATO」構築を提案＝韓国ネットは「日本を信じるな」と警戒 日本ネットは「アホなこと言い出した」じゃないのかな？ recordchina.co.jp/b992298-s39-c1…

www.recordchina.co.jp石破茂氏が日韓中心の「アジア版NATO」構築を提案＝韓国ネットは「日本を信じるな」と警戒9日、韓国メディア・毎日経済は「自民党内でも代表的な知韓派で、安全保障戦略に詳しい人物とされる石破茂前首相、両国の安全保障・経済面での連携強化を強く訴えた」と伝えた。画像はAIで作成。
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Sources: Record China, 2ch

Comments:

  • "NATO itself is a mess right now — no way Korea can be trusted."
  • "Even without Ishiba fretting about it, Japan's multilateral security network is quietly being built — without Korea."
  • "Korea will join some 'Specific-Asia Treaty Organization' together with North Korea, China and Russia."
  • "The more Japan is at the center, the less fiscal room Japan actually has for it."
  • "This is just a modern-day Greater East Asia Co-Prosperity Sphere."
  • "No one is fool enough to team up with a country that breaks its promises."
  • "There's no way Japan and Korea make this work — what's the hidden agenda? Pushing the US out to set up China as the sole hegemon?"
  • "It's less 'don't trust Japan' and more 'don't take anything Ishiba says at face value.'"

The nuclear question if the US-Japan alliance ended

A RUSI analyst argued that if the US withdrew its defense guarantee, Japan would have no choice but to acquire nuclear weapons.

キミくん
キミくん
@kimikun_310
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「日本は自力で抑止できる」日米同盟終了論の筆者が反論　英専門家は「日本は核兵器を持つしかない」と指摘 #エキスパートトピ(高橋浩祐) #Yahooニュース news.yahoo.co.jp/expert/article…

news.yahoo.co.jp「日本は自力で抑止できる」日米同盟終了論の筆者が反論　英専門家は「日本は核兵器を持つしかない」と指摘 #エキスパートトピ（高橋浩祐） - エキスパート - Yahoo!ニュース日米同盟の終了や台湾有事への不介入、米軍の主力を第一列島線から第二列島線へ移すよう提言した米シンクタンク「Defense Priorities」の報告書に批判が相次ぐ中、筆者のジェニファー・カバナ氏が
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Sources: Yahoo! news, 2ch

Comments:

  • "Even if you say so, there are plenty of opponents inside the country…"
  • "It's honestly a perfectly reasonable conclusion, lol. In Japan's situation you could push it through just by citing the North Korean threat — though pointing at China and Russia is a bit awkward."
  • "Japan, Korea, Taiwan and the Philippines will all end up having them."
  • "I think having them is a valid option, personally."
  • "Japan couldn't manage them anyway."
  • "Without them, we'd become Ukraine in no time…"
  • "It just means the alliance won't be ended, because ending it would risk exactly that. And even if we tried, we'd be crushed by sanctions and force before we could arm."
  • "Ukraine ended up proving that nukes are the cheapest deterrent there is."
  • "People have long boasted Japan could build one in a week, but do they not get that war starts the moment development is detected?"
  • "We should at least keep the shortest path to building one."