Supported by

By Kurt Campbell and Rush Doshi

Mr. Campbell served as President Joe Biden’s deputy secretary of state, and Mr. Doshi as deputy senior director for China and Taiwan affairs on the National Security Council.

For the first time in its modern history, the United States faces a rival — China — that has greater scale in most of the critical dimensions of power, and American national capacity alone may not be enough to rise to the challenge.

We are entering an era where the true measure of American primacy will be whether Washington can build what we call allied scale: the power to compete globally in tandem with other countries across economic, technological and military domains.