The discussion revolves around the role that should be played in the international arena by the United States of America, a superpower that appears to have passed its influential peak. The US has hopes pinned on Asia as a new lifeline to global economic dynamism, but China, the dominant force on the continent, is an unavoidable obstacle to US "hegemony". What is China seeking to achieve? How might the US and Japan cooperate in response? And what will become of international security?

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President Donald Trump shakes hands with President of the European Commission Ursula von der Leyen as he announces a trade deal with the EU at Trump Turnberry golf club on July 27, 2025, in Turnberry, Scotland. (Andrew Harnik via Getty Images)