Yes, there has been a serious crisis
recently between China and Japan.

The collision between a Chinese
fishing trawler and a Japanese coastguard patrol boat close to the disputed
islands, known as Senkaku in Japan and Diaoyu in China, prompted both countries
to take drastic measures which resulted in China canceling a number of
high-level ministerial meetings between the two countries. But no, this doesn’t
imply that the region is on the brink of open confrontation. It doesn’t disturb
the general trend towards a more pragmatic cooperative attitude from both
sides.