Japan's tough talk on Russia is really about China
https://edition.cnn.com/2022/03/13/asia/japan-russia-ukraine-war-international-politics-hnk-intl/index.html
Japan's rising tension to spend more money on military does not begin by war between Ukraine and Russia, but by Beijing's military provocation and North Korea's missile launching.
Russia also used to be military threat, but was not taken up as main enemy.
At this time, Russia suddenly became the country that gathers the biggest hatred among Japanese, while it used to be the role of Korea or China.
