he also said nakasone may have felt the need to leave room for negotiations on bringing u.s.nuclear arms into japan in the event the u.s. made such a request during an emergency. >>> japan and the united states talked on free trade. ron madison is here with more on what went on. ron? >> you know what? these two countries have been having the hardest time in these talks and negotiators have failed to find common ground. officials came away empty handed from talks in tokyo but have agreed to meet again soon in the u.s. the two sides are divided over tariffs on key farm products including beef and park. tariffs on auto parts are also an issue. after the three-day talks japan's negotiator said u.s. officials appear eager to conclude an overall deal for the 12-nation tpp in the coming months. >> translator: i think there are some issues we still have to work on. a ministerial meeting for a final political settlement may be needed. but we're not at the stage to arrange that. >> we had a productive week and we look forward to re-engaging very soon with japan to make further progress