China backs North korea not Japan, buddy.
China is in current territorial dispute with Japan.
Wherever you are getting your information from you should go to them and slap them.
NO.
THe intelligence agencies in the U.S. are always at odds with each other. THey don't share intel with each other. But due to a strong government they manage to co-exist. In Pakistan all hell would break loose, with each agency fighting for more and more power.