Tokyo : Japan and the US Thursday began discussing the revision of bilateral defence guidelines in a meeting involving their senior defence officials and diplomats, media reported.
Responding to cyber-attacks and cooperation in using outer space are believed to have been covered in a director-general level meeting, but it was the first time that the two sides work on revising the defence guidelines, Xinhua reported citing Japan's Kyodo News.
Japan and the US agreed last month in their "two-plus-two" meeting involving their defence and foreign chiefs to revise the guidelines by the end of 2014.
The guidelines specify role-sharing between the Japanese Self-Defence Forces and the US military forces in defending Japan.
