<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.wiki iliyopita waziri wa mambo ya nje wa marekani rex tillerson alizuru japan, korea kusini na china na suala linalohusiana na jinsi gani wanaweza kukabiliana na hatua hiyo ya korea kaskazini lilikuwa ni suala kubwa katika mazungumzo yake.  <response>: last week u.s. secretary of state rex tillerson visited japan, south korea and china and how to handle north korea was a major issue in his talks. 