***** NOT A TEACHER *****
(1) I am NOT a great reader, but this is my interpretation:
(a) "The security equation in this part of the world is changing very fast" =
Nice words for "China is starting to become too aggressive, in the opinion of many countries."
(b) The U.S.A. wants both South Korea and Japan to be more fully onboard" =
The United States does not want South Korea and Japan wasting their time and
efforts in arguing over Korean-Japanese relations. The United States wants Korea and
Japan to fully join the United States (and other nations) in designing a unified
approach to the big question: what can be done to deal with (in some people's
opinion) a growing Chinese aggressiveness.
(2) My dictionary tells me that "onboard" means "aboard." For example, when
Americans used passenger trains, the conductor would yell "All aboard!!!" That is,
get on the train. It is going to leave the station. So the United States wants Korea and
Japan to get on the "Let's decide how to handle China" train. Maybe Korea and Japan
do not want to completely "get on the train" because (a) Korea and Japan are arguing
over certain things, and (b) Both Korea and Japan do not want to anger China (which
is, of course, an important neighbor). But the United States, which gives a lot of
help to Korea and Japan, expects those two countries to join the United States (and
other countries) with more enthusiasm in designing a policy to deal with the
People's Republic of China. In other words, while Korea and Japan are arguing
over certain matters, they cannot give their whole attention to the bigger issue of'
China's actions. Get onboard the train completely. Not just one foot. Your whole
body. Your whole soul. Give all of your attention to this train ride.
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