Chinese surveillance ships briefly entered waters near disputed islands in the East China Sea that fuel nationalist passions on both sides. Will Beijing ultimately accept Japan's reasoning for the move?
Elements of the dispute include a Ming Dynasty map, a US treaty, and a fish factory. The following is a basic breakdown.
The attack by a group of men in Beijing came as nationalist sentiment deepens in both China and Japan over ownership of islands in the South China Sea.
Japan's army has taken over flood rescue and cleanup operations, drawing more positive reactions from Japanese formerly wary of praising the military.
For many international fugitives, from Serbian General Ratko Mladic and Carlos the Jackal to Congolese warlord Bosco Ntaganda, the place to hide is in an open, urban setting.
In 1995, members of the Aum Shinrikyo religious cult shook Japan when they released sarin nerve gas into the Tokyo subway system, killing 13 people and injuring thousands.