Reflecting rising tensions between the United States and China in the South China Sea, the Pentagon should invite Britain’s Royal Navy to station an attack submarine in Guam.

While Britain had previously considered deploying one of its new aircraft carriers to the South China Sea area, those plans appear to have been ruled out due to cost. But a submarine assignment would be cheaper and, in many ways, more useful to regional security. It would also complement the Royal Navy’s upcoming carrier deployment through the South China Sea next summer.