SEOUL, South Korea (AP) -- The top U.S. envoy for North Korea is warning Pyongyang that any nuclear test will be met with "swift and sure" international punishment.
Glyn Davies said Monday after meeting his South Korean and Japanese counterparts that such a provocation would be a "serious miscalculation."
Their meeting comes weeks after North Korea's failed long-range rocket launch and amid worries Pyongyang is preparing for its third nuclear test.
Davies says a path of engagement remains open but that North Korea's mid-April rocket launch shows that Pyongyang "can't be trusted to follow through" on its promises. The rocket launch announcement came shortly after Pyongyang and Washington struck a food aid-for-nuclear-freeze deal.