The comments of war-end Navy Minister Admiral Yonai quoted below are from
Takagi Sōkichi "Nikki to Jōhō" (Diary and Notes)
Editor: Ito Takashi
Misuzu Shobo, Tokyo ISBN: 4-622-035045-7
高木惣吉日記と情報 下 編者代表伊藤隆 みすず書房

Rear Admiral Takagi Sōkichi is famed among historians of WWII in the Pacific as having served as the "brain trust" of Navy Minister Admiral Yonai, providing Yonai with information to buttress his support of Foreign Minister Tōgō Shigenori in the debates that led finally to surrender on the terms of the Potsdam Declaration. His diary and notes, compiled into "Nikki to Jōhō" by Ito Takahashi, are among the most important primary historical resources for Pacific War research.

[page 920 28 July, 1945]

声明ハ先ニ出シタ方ニ弱味ガアル(二十六日ポツダム宣言)。 「チャーチル」ハ没落スルシ、米ハ孤立ニ陥リッツアル。 政府ハ黙殺デ行ク。「アセル」必要ハナイ。

"When it comes to statements like this (i.e., the Potsdam Declaration on the 26th), the side first to speak shows weakness. Churchill has fallen, the U.S. is falling into isolation. The government's stance will be to ignore it. There's no need to 'rush'."

[page 927 12 August, 1945]

私ハ言葉ハ不適当ト思フガ、原子爆弾ャ蘇聯ノ参戦ハ、或ル意味デハ天佑ダ。国内情勢デ戦ヲ已メルトイフコトヲ出サナクテ済ム。私ガ予テカラ時局収拾ヲ主張スル理由ハ、敵ノ攻撃ガ恐ロシイノデモナイシ、原子爆弾ヤ蘇聯参戦デモナイ。一ニ国内情勢ノ憂慮スベキ事態ガ主デアル。従ツテ今日其ノ国内事情ヲ表面ニ出サナクテ収拾が出来ルトイフノハ寧口幸ヂアル。 軍令部アタリモ、国内ガ解チツテ居ラナクテ困ルヨ。

"Though I think my choice of words inappropriate, the atomic bomb and the Soviet's entry into the war are, in a sense, gifts from heaven. They let us end the fighting without having to publicly attribute the domestic situation. The reason I've long advocated for resolving the current crisis is neither that I fear the enemy's attacks, nor the atomic bombs or the Soviet's entry into the war. Rather, it's mainly the appalling domestic situation. ^{I.e., the rapidly deteriorating internal moral and material state of the nation. Note the correlation with Hirohito's statement in his second "Sacred Decision" that "The critical issue is the faith and resolve of the people, ...". See Hirohito's Lessons of History}   So being able to resolve the situation today without having to bring the domestic situation to the surface is, in fact, fortunate."