China on Saturday rejected German Chancellor Angela Merkel's appeal to join a Cold War-era arms control treaty that the United States accuses Russia of breaching, saying it would place unfair limits on the Chinese military.

Fearing a nuclear arms race between China, Russia and the United States after the collapse of the Intermediate-Range Nuclear Forces (INF) treaty, which the United States is withdrawing from, Merkel made her call for a global treaty.

"Disarmament is something that concerns us all, and we would of course be glad if such talks were held not just between the United States, Europe and Russia but also with China," Merkel told the Munich Security Conference.