After months of diplomatic delay — and a week after Seoul released its Basic Plan for the Development of South Korean Nuclear-Propelled Submarines...

Seoul's plans for nuclear-powered submarines come as regional rivals ramp up undersea capabilities, raising concerns over a widening military buildup.

The two allies are also expected to discuss the transfer of military control and a data breach involving a US firm at their talks next week.

Korea and the United States launched their first round of talks Tuesday to implement a set of security agreements reached by their leaders last year, including Seoul's push to…