Shigeru Ishiba denied he had decided to quit after a source and media reports said he planned to announce his resignation to take responsibility for a bruising upper house election defeat.

Japanese Prime Minister Shigeru Ishiba denied reports he plans to announce his resignation over a historic defeat of his ruling party in a weekend election.

Japanese Prime Minister Shigeru Ishiba has vowed to remain in power to oversee the implementation of a new Japan-US tariff agreement, despite media speculation and growing calls for him to resign after the historic defeat of his governing party.