the north koreans said it was, quote, regrettable. rich edson is in tokyo with more. >> reporter: in a few hours, mike pompeo will brief top officials in tokyo. he calls the result of two days of meetings in pyongyang productive. north korea says they're regrettable. secretary of state before leaving pyongyang addressed reporters on the tarmac there. he said the u.s. and north korea made progress on central issues, acknowledged they were complicated and said they agreed to a negotiation structure to resolve them. >> the north koreans confirmed that missile engine testing facility, we talked about what that modalities would look like for that destruction of that facility as well. so progress there as well. and we have laid out a path for further negotiations at the working level so the two teams can get together and continue the discussions.