Analysis of information sources in references of the Wikipedia article "Taïwan" in French language version.
« The Japanese leadership openly split on whether a crisis in Taiwan was included in the geographic expression "area surrounding Japan." In the event, Japan refused to stipulate the contingencies under which it would provide rear area support for U.S. forces or even the geographic scope of the "area surrounding Japan". [...] The two sides have not articulated clearly what the alliance stands for, nor who it is defined to protect against. »