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18.04.2026

The Day Iran Rescinded the Hormuz Opening

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This page is an archive of main headlines from Japan for 18.04.2026.

It displays 45 headlines from many sources chronologically, as they appeared throughout the day, accompanied by AI overviews that were written in real time.

18.04.2026The Day Iran Rescinded the Hormuz Opening

Japanese editors began the day highlighting an apparent diplomatic breakthrough, reporting the Iranian Foreign Ministry's announcement to open the Strait of Hormuz during the ceasefire. However, this optimism was short-lived. By early afternoon, domestic priority shifted to a series of earthquakes in northern Nagano, where seismic intensity reached 5+, forcing the suspension of the Hokuriku Shinkansen. The international narrative pivoted sharply by the evening as media outlets reported the Iranian Revolutionary Guard’s decision to reimpose "strict military control," effectively rescinding the earlier promise of passage. This reversal, accompanied by reports of tanker shootings, signaled a return to the blockade. Concurrently, editors maintained heavy coverage of the Kyoto murder investigation, focusing on forensic searches of a public toilet and the suspect’s digital history regarding body disposal. The day was defined by the collapse of a brief maritime opening and significant domestic seismic activity.

18.04.2026

00:18Hormuz Opens Its Gates

Japanese editors are reporting on Iran's announcement to fully open the Strait of Hormuz to all commercial vessels during the ceasefire period, with multiple outlets covering Foreign Minister Araghchi's statement on designated routes (TBS News, NHK News, Yomiuri Shimbun, Asahi Shimbun, Nikkei Shimbun, Yahoo News Japan). Simultaneously, coverage continues on the Lebanon ceasefire agreement, with reports on Iran's involvement and Israel's difficult decision (Mainichi Shimbun).
00:36

09:38Hormuz Passage Permits

Japanese editors are reporting on Iran's new rules for Strait of Hormuz passage, with multiple outlets covering the requirement for ships to obtain permission and the continued difficulty for over 20 tankers despite the ceasefire opening (TBS News, Nikkei Shimbun, Yahoo News Japan, NHK News). Simultaneously, coverage continues on the spread of misinformation during the Kyoto boy search, with reports on how unverified claims circulated on social media (Asahi Shimbun).
11:09
日銀の金融政策決定会合が4月下旬に迫り、銀行界で利上げの行方に関心が高まっている。0.25%の利上げに動いた場合、3メガバンクグループの純利益は3000億円近く押し上げられる見通しだ。「金利ある世界」で政府の財政負担が増すのとは対照的に、民間の金融機関でマネーが生まれる。 「今月の確率は五分五分じゃないか」――。ある大手行の経営幹部は日銀の利上げを値踏みする。2026年度が始まったばかりの4月、…
11:09

11:18Hormuz Passage Permits

Japanese editors are reporting on the Strait of Hormuz opening to commercial vessels during the ceasefire, with multiple outlets covering Iran's conditions and the continued challenges for tankers (NHK News, TBS News, Nikkei Asia). Simultaneously, coverage continues on the spread of misinformation during the Kyoto boy search, with reports on how unverified claims circulated on social media (Asahi Shimbun).
12:26
Kyodo News

Japan, Australia conclude frigate development deal

Japan and Australia said Saturday they have concluded a contract to jointly develop a new fleet for the Australian navy based on the upgraded Japanese Mogami-class frigate.
12:26

12:36Iran's Blockade Warning

Japanese editors are reporting on Iran's warning that it will not recognize free navigation if the U.S. imposes a maritime blockade, with multiple outlets covering the potential for talks within days and President Trump's response to the Strait of Hormuz opening (NHK News, TBS News). Simultaneously, coverage continues on the discovery of new details in the Kyoto boy case, with reports on the suspect allegedly temporarily abandoning the body in a public toilet (Yomiuri Shimbun).
13:24
13:38
18日午後1時20分ごろ、長野県北部を震源とする地震があり、最大震度5強を観測した。 気象庁によると、震源の深さは約10キロ、地震の規模を示すマグニチュードは5.0と推定される。この地震による津波の心配はないという。気象庁はこの地震で緊急地…
13:38

14:01Nagano's Tremor

Japanese editors are reporting on a magnitude 5.0 earthquake in northern Nagano Prefecture, with multiple outlets covering the maximum intensity of 5+ on the Japanese scale and confirming no tsunami risk (NHK News, TBS News, Asahi Shimbun, Chunichi Shimbun, Yahoo News Japan). Simultaneously, coverage continues on the Tokyo IT executive murder case, with reports on the suspect's alleged purchase of multiple blue tarps before the body disposal (Sankei Shimbun).
14:16
18日午後1時20分ごろ、長野県北部を震源とする地震があり、最大震度5強を観測した。 気象庁によると、震源の深さは約10キロ、地震の規模を示すマグニチュードは5.0と推定される。この地震による津波の心配はないという。気象庁はこの地震で緊急地…
14:16

15:11Nagano's Tremors Halt the Bullet Train

Japanese editors are reporting on multiple earthquakes in Nagano Prefecture, with multiple outlets covering the strongest tremor reaching intensity 5+ on the Japanese scale and the suspension of Hokuriku Shinkansen services due to seismic impact (NHK News, TBS News, Chunichi Shimbun, Yahoo News Japan). Simultaneously, coverage continues on the Kyoto boy case, with reports on the suspect's alleged internet searches about body disposal methods (Sankei Shimbun).
15:16

15:37Nagano's Tremors Return

Japanese editors are reporting on multiple earthquakes in Nagano Prefecture, with multiple outlets covering a second tremor reaching intensity 5- on the Japanese scale following an earlier intensity 5+ quake, with live coverage and warnings about similar-scale earthquakes continuing (NHK News, TBS News, Chunichi Shimbun, Mainichi Shimbun, Yahoo News Japan). Simultaneously, coverage continues on Japan's economic vulnerability, with reports on the yen's weakness amid global crisis and domestic monetary policy caution (Asahi Shimbun).

16:18Nagano's Tremors Persist

Japanese editors are reporting on continuing seismic activity in Nagano Prefecture, with multiple outlets covering additional tremors reaching intensity 5- following earlier intensity 5+ quakes, and warnings about similar-scale earthquakes persisting for about a week (NHK News, TBS News, Chunichi Shimbun, Mainichi Shimbun, Yahoo News Japan). Simultaneously, coverage continues on Japan's economic policy, with reports on major banks' profits potentially rising with interest rate hikes (Nikkei Shimbun).
17:16
「自県大学進学率」という数字がある。大学進学者のうち、出身高校と同じ都道府県にあるキャンパスに入学した学生の割合を示す。大学が多い都市部で高い一方、大都市の隣県や大学が少ない地方で低い傾向がある。若者の他県への流出度合いを示す数値でもあり…
17:16

17:18Nagano's Tremors and Kyoto's Training Tragedy

Japanese editors are reporting on continuing seismic activity in Nagano Prefecture, with multiple outlets covering additional tremors reaching intensity 5+ and warnings about similar-scale earthquakes persisting for about a week, while also reporting on a fatal accident involving a Kyoto high school's overseas training program where alternative plans for bad weather were not prepared (NHK News, TBS News, Chunichi Shimbun, Sankei Shimbun).
17:32
川崎重工業は人工知能(AI)で動く造船ロボットを開発する。自律歩行して数十メートル四方の大型構造物を溶接し、船体を組み立てる。2028年にも実用化する。溶接工程の生産性を2倍に引き上げて造船技術者不足を補い、建造能力を高める。 開発するAIロボットは四足歩行が可能で、造船所内の段差や階段などの障害物を避けながら作業現場まで自ら赴く。カメラやセンサーで溶接対象となる場所の状況をAIが随時、把握しな…
17:32
17:35
Kyodo News

Strong M5.0, 5.1 quakes hit Nagano Prefecture in central Japan

Two strong earthquakes jolted Nagano Prefecture in central Japan on Saturday, with the first measuring a preliminary magnitude of 5.
17:35

19:05Nagano's Twin Tremors

Japanese editors are reporting on continuing seismic activity in Nagano Prefecture, with multiple outlets covering additional tremors reaching magnitude 5.0 and 5.1 and warnings about similar-scale earthquakes persisting for about a week (Kyodo News English, TBS News, Chunichi Shimbun). Simultaneously, coverage continues on the Kyoto boy case, with reports on a crime scene investigation at a toilet between the home and elementary school (NHK News).
19:20
中東のホルムズ海峡を18日、複数の商船が通過した。イランのアラグチ外相が海峡の「開放」を宣言し、船舶が航行を始めた。ただ、精鋭軍事組織の革命防衛隊は航行に条件を課すと表明しており、完全な正常化には時間がかかりそうだ。 船舶情報サイト「マリントラフィック」によると、17〜18日に石油製品の運搬船などが海峡を通過した。イランが設定した航路とみられる。通航料を払ったかは不明。 アラグチ氏は米東部時間1…
19:20
19:29

19:47Nagano's Fault Line Warnings

Japanese editors are reporting on continuing seismic activity in Nagano Prefecture, with multiple outlets covering warnings about similar-scale earthquakes persisting for about a week and the presence of active fault zones that could produce even stronger tremors (TBS News, Chunichi Shimbun, Kyodo News English). Simultaneously, coverage continues on the Kyoto boy case, with reports on a crime scene investigation at a toilet between the home and elementary school (NHK News).
20:14
Kyodo News

Japan, Australia sign contracts to deliver 1st 3 of planned frigates

Japan and Australia said Saturday they have finalized contracts to jointly deliver the first three of 11 ships for the Australian navy based on the upgraded Japanese Mogami-class frigate, as the two countries deepen their defense cooperation amid China's growing assertiveness.
20:14
21:09
【ドバイ=浜岳彦、ワシントン=飛田臨太郎】イランの軍事当局は18日、ホルムズ海峡を厳格管理する体制に戻したと表明した。前日のアラグチ外相による「開放宣言」から一転、事実上の再封鎖に踏み切ったとみられる。 イラン精鋭軍事組織の革命防衛隊に近いタスニム通信によると、軍当局の幹部は「海峡の管理を以前の状態に戻し、軍が厳格に管理・統制する」と述べた。 一部の商船が通過することを許可したが、米国がイランに…
21:09

21:38Hormuz Returns to Military Grip

Japanese editors are reporting on Iran's reversal regarding the Strait of Hormuz, with multiple outlets detailing its military authorities' declaration that the strategic waterway has returned to a state of 'strict military control and management,' effectively reimposing a blockade shortly after an opening announcement (Yomiuri Shimbun, Sankei Shimbun, TBS News, Nikkei Shimbun, Yahoo News Japan). Simultaneously, coverage continues on seismic activity in Nagano Prefecture, with reports on a new tremor measuring intensity 5+ (Chunichi Shimbun).

23:42Hormuz Strait's Military Grip Returns

Japanese editors are reporting on Iran's military authorities declaring the Strait of Hormuz has returned to 'strict military control and management,' effectively reimposing a blockade shortly after an opening announcement, with reports of attacks on commercial vessels in the area (Yomiuri Shimbun, Sankei Shimbun, TBS News, Nikkei Shimbun, Yahoo News Japan). Simultaneously, coverage continues on seismic activity in Nagano Prefecture, with reports on a new tremor measuring intensity 5+ (Chunichi Shimbun).