Despite the fraught global environment — with U.S.-China animosity mounting alongside a bevy of regional security concerns — Japan appears to be viewing the situation as a glass half-full scenario, according to leading experts, as well as current and former officials.

That was the picture put forward Wednesday, when pundits and diplomats from Japan and across the globe gathered for the Eurasia Group's inaugural G-Zero Summit in Tokyo — the name referring to Eurasia founder Ian Bremmer's concept of a world lacking in global leadership.

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