Treaty signing, expiration, and shifts in alliance relationships
English
⚡ FAST READ1 min read The large-scale military exercises by both the US and China in the South China Sea are not merely shows of force, but a structural turning point fundamentally rewriting the security order of the Indo-Pacific. Sea lanes through which approximately 80% of Japan's energy supply
English
⚡ FAST READ1-min Read North Korea's successful test of a new ICBM capable of reaching all of Japan has decisively disrupted the security balance in East Asia. Japan is compelled to rebuild its missile defense system on the largest scale since the war, making 2026 a turning point for
English
⚡ FAST READ1-min read In early 2026, large-scale military exercises by both US and Chinese forces simultaneously in the South China Sea have brought the risk of accidental collision to its highest level since the Cold War. This tension directly impacts Japan's sea lane defense and economic security, potentially
English
⚡ FAST READ1-min read The escalating tensions in the Taiwan Strait are fundamentally shaking Japan's exclusively defense-oriented policy, maintained for 80 years since the end of the war, bringing a historical juncture where the effectiveness of the Japan-U.S. alliance and the significance of Article 9 of the Constitution
English
⚡ FAST READ1 min read North Korea's resumption of long-range missile launches in early 2026, with one passing over the Japanese archipelago, poses the greatest challenge to Japan's post-war exclusively defense-oriented policy. Calls for a defense policy review are surging on social media, particularly X, and the
Economy & Trade
⚡ FAST READ1-min read Japan's PM Takaichi visits Washington next week for a high-stakes summit where the US-Japan alliance faces its most complex stress test in decades: balancing trade friction, defense burden-sharing demands, and divergent Iran strategies amid an escalating Middle East crisis. ── 3 Key Points ───────── * • PM Sanae Takaichi
Governance & Law
⚡ FAST READ読了 1分 台湾海峡の緊張激化は、戦後80年間維持されてきた日本の安全保障体制の根幹を揺るがし、日米同盟の信頼性と日本の主権的判断が同時に試される歴史的局面を生んでいる。この議論の帰結は、インド太平洋の秩序そのものを再定義する。 ── 3点で理解する ───────── * • 中国人民解放軍は2025年後半から台湾周辺での軍事演習の頻度を増加させ、2026年に入り台湾海峡中間線を越える活動が常態化している * • 米国は日本に対し、台湾有事における共同対処計画の具体化を要請し、在日米軍基地の使用だけでなく自衛隊の積極的関与を求めている * • 日本政府は「重要影響事態」や「存立危機事態」の認定基準について、内部で法的整理を加速させている ── NOW PATTERN ───────── 日米同盟内部の非対称な期待と負担を巡る「同盟の亀裂」が、台湾海峡における米中の「対立の螺旋」と連動し、日本に戦後体制の根本的再編を迫る構造的圧力となっている。 ── 確率と対応 ────── • 基本（Base case） 55% — 中国軍の演習頻度が現
Governance & Law
⚡ FAST READ1-min read Rising tensions in the Taiwan Strait are forcing Japan into its most consequential security decision since 1945: whether to deploy the Self-Defense Forces in support of a US-led coalition, a move that would fundamentally redefine Japan's pacifist identity and reshape the Indo-Pacific order. ── 3 Key
English
⚡ FAST READ1 min read The escalating tensions in the Taiwan Strait are shaking the foundations of Japan's security system, maintained for 80 years since the end of the war, creating a historical juncture where the reliability of the Japan-U.S. alliance and Japan's sovereign judgment are
Energy
⚡ FAST READ1-min read If confirmed, Russia's deployment of tactical nuclear warheads near the Donbas frontlines would represent the first forward-positioning of nuclear weapons in an active combat zone since the Cold War, fundamentally altering NATO's deterrence calculus and forcing the alliance into its most consequential strategic
Energy
⚡ FAST READ1-min read Germany's flat refusal to support a U.S. naval operation in the Strait of Hormuz marks the most explicit transatlantic military rupture in decades, signaling that European allies are no longer willing to underwrite American military campaigns in the Middle East — even when global energy
Economy & Trade
⚡ FAST READ読了 1分 米中両国が南シナ海で同時期に大規模軍事演習を実施したことで、日本は「米国との同盟深化」と「対中経済依存」の間で戦後最大級の戦略的選択を迫られている。この緊張は一過性ではなく、構造的な対立の螺旋が不可逆的に進行している兆候である。 ── 3点で理解する ───────── * • 2026年1月〜3月、米海軍第7艦隊が南シナ海で「フリーダム・エッジ2026」演習を実施。空母打撃群2個を展開し、過去10年で最大規模となった。 * • 中国人民解放軍海軍（PLAN）が南シナ海の西沙・南沙諸島周辺で同時期に大規模実弾演習を実施。演習海域は約15万平方キロメートルに及んだ。 * • 日本政府は2026年2月、南シナ海情勢に関する外務大臣談話を発出し、「力による一方的な現状変更の試み」に対する深い懸念を表明した。 ── NOW PATTERN ───────── 米中間の「対立の螺旋」が自己強化的に進行する中、日米同盟の深化と日中経済依存という二律背反が「同盟の亀裂」リスクを内包し、戦後日本の安全保障政策の「経路依存」が転換点を迎えている。