Why does Japanese Prime Minister Fumio Kishida decide to step down?

①Japanese Prime Minister Fumio Kishida announces that he will step down in September. What has led to this decision? (00:46) ②Russia's Belgorod has declared a state of emergency following Ukrainian attacks. Where is the Russia-Ukraine war heading? (12:00) ③Iran has lashed out at the western call for restraint in attacking Israel, saying it is determined to defend its national security. Is a wider war in the region unavoidable? (24:28) ④Chinese Foreign Minister Wang Yi is on a visit to Myanmar and Thailand. (33:20) ⑤Producer inflation in the US rose at a softer pace than expected in July. (42:28)