石破茂宣布将辞职，不参选下任自民党总裁

Core Points - Japanese Prime Minister Shigeru Ishiba announced his resignation as the president of the Liberal Democratic Party (LDP) during an emergency press conference on September 7, citing the conclusion of U.S.-Japan tariff negotiations as an appropriate time for his departure [1][6]. - Ishiba expressed a desire to initiate the process for selecting a new party president, stating that there is no need to advance discussions on holding an early presidential election according to the LDP's regulations [2][4]. - He emphasized that his resignation was a difficult decision, made to prevent potential divisions within the party, and called for unity among party members during this challenging time [4][5]. Election and Responsibilities - Ishiba confirmed that he would not participate in the upcoming presidential election for the LDP and acknowledged having considered various options regarding the dissolution of the House of Representatives and holding general elections [5][6]. - He reiterated the importance of ensuring that government functions do not stagnate, which influenced his decision to resign [5]. - While the tariff negotiations with the U.S. have reached a temporary conclusion, Ishiba noted that they are not entirely finished and that it is crucial to ensure the agreement is executed properly [7].