Since President Nixon enunciated the Guam Doctrine in 1969, Japanese defense policy has emerged as a major issue in US relations with Japan.
Niksch, Larry A.
"Japanese Attitudes Toward Defense and Security Issues,"
Naval War College Review: Vol. 36
, Article 8.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol36/iss4/8