Ukraine and China’s Taiwan ambitions are expected to dominate summit discussions, but Fumio Kishida will have a powerful backdrop

The war in Ukraine and Chinese aggression towards Taiwan will dominate G7 discussions this week, but host Fumio Kishida is expected to carve out time to push for a pledge on nuclear weapons when leaders meet in Hiroshima, the first place on Earth targeted by an atomic bomb.

The leaders began to arrive on Thursday, ahead of an expected visit on Saturday to the city’s Peace Memorial Museum, which contains exhibits showing the scale of the tragedy that unfolded after the US dropped a nuclear bomb on the morning of 6 August 1945, killing 140,000 people by the end of the year.