On October 12, just before the deadline for foreign diplomacy, Konoe, who was being pressed for a decision on the war, invited Foreign Minister Teijiro TOYODA, Minister of the Navy Koshiro OIKAWA, Minister of the Army Hideki TOJO and the Director of the Planning Board, Teiichi SUZUKI to Tekigaiso, and he conferred on how to deal with war against the United States.
外交期限の迫った10月12日、戦争の決断を迫られた近衛は豊田貞次郎外相、及川古志郎海相、東條英機陸相、鈴木貞一企画院総裁を荻外荘に呼び、対米戦争への対応を協議した。