Presidents and prime ministers from the Group of Seven rich nations are huddling in Japan for two days of discussions focused on how to stoke demand and encourage growth.
But China's growing assertiveness, particularly in bitter territorial disputes in the South China Sea was providing ever-louder background music, with European Council President Donald Tusk saying the group needed to take a "tough stance" on the hot-button issue.
Beijing swiftly launched a stinging broadside against the G7 -- Britain, Canada, France, Germany, Italy, Japan and the US -- which it said should not pursue "selfish interests".
The Xinhua news agency, Beijing's official mouthpiece, reinforced the point with a blunt commentary that said the group "should mind its own business" and accused Japan of exploiting its host status to try to isolate China.
More From This Section
Both Washington and Tokyo -- which is locked in a separate dispute with Beijing over islands in the East China Sea -- have warned against China stoking tensions in the contested waters.
Leaders, including US President Barack Obama -- who is making a historic trip to the atomic-bombed city of Hiroshima tomorrow -- visited Ise Jingu, a shrine complex that sits at the spiritual heart of Japan's native Shintoism.
Abe's decision to take his counterparts to the site -- also a hotspot for domestic tourists -- has raised eyebrows among some critics, however, who say Shinto retains some of the nationalist overtones with which it was imbued when it was the state religion.