US and China discussing reciprocal nuclear site visits amid concerns about a new arms race

The United States and China are engaged in preliminary discussions regarding reciprocal visits to each other's nuclear sites, a measure aimed at fostering trust and mitigating concerns about a potential arms race. These working-level talks have largely taken place on the sidelines of gatherings involving the five permanent members of the United Nations Security Council, with the U.S. expecting to advance these discussions in upcoming in-person meetings. The proposed visits would encompass facilities such as the U.S. Department of Energy national laboratories and their Chinese equivalents, with the U.S. also open to including nuclear testing sites.

The initiative comes as the United States expresses growing concern over the rapid and opaque expansion of China's nuclear arsenal. Notably, the idea of reciprocal visits was initially put forth by Beijing earlier this year, signaling a potential openness to confidence-building measures. This diplomatic effort also gains significance following the expiration of the last major arms control treaty between the U.S. and Russia, the New START agreement, in 2025, leaving a gap in global nuclear arms limitation efforts.

While China has historically resisted trilateral arms control negotiations, citing the smaller size of its nuclear stockpile compared to those of the U.S. and Russia, these current discussions are seen as a vital step toward reducing nuclear risk. Experts suggest that such reciprocal visits could lay the groundwork for further diplomatic efforts to enhance strategic stability between the two nuclear powers.