just found out china and former soviet union(russia) had a conflict. ancient blabla. it doesnt give a $. its more dead crazy serious.
http://en.wikipedia.org/wiki/Sino-Soviet_border_conflict
China has disputes with all it's neighbouring countries, although may agreements na sila with some of them. This is not surprising for a country as big as China, lalo na't noong unang panahon e marami rin silang sinakop na bansa.
Part of the problem e for a long time, hindi nila na-pursue ung mga claims nila. Another part is isa sila sa may maagang written language kaya more or less kumpleto historical documents nila. At isa pa e tuluy-tuloy and pag-unlad nila ngayon kaya nagiging agresibo na sila sa pag-exert ng claims nila.
I don't think they are really aiming for a fight, but instead they are making sure na kung magkaroon ng arguments later on, maipapakita nila na active pa ung claims nila. Malaki kasi ang weight nyan sa international courts. Usually ang tinitignan e kung sino yung currently may effective administrative control at kung sino yung gusto ng mga tao.
As you've heard on the news nagpadala US, Japan at South Korea ng mga military aircraft sa ADIZ ng China pero wala naman confrontation na naganap.