The headline refers to the ongoing territorial disputes between China and its neighbors, specifically focusing on why China continues these quarrels. The conflicts notably include the island disputes in the East China Sea, with Japan. As per the usual narrative, these disputes are triggered by a combination of historical claims, strategic interests, and nationalistic sentiments. The piece likely explores China's motivations and the potential implications on regional stability.

Japan, one of the primary nations involved in these territorial disputes with China, is deeply concerned about its national security and the potential disruptions to the regional stability. These issues spark significant interest and sensitivity among the Japanese public. There's a blend of historical animosity, fear of Chinese military expansion, and worry about the impact on Japan's resource security.

Territorial disputes are dealt with in a variety of ways in the US and EU. For instance, the US typically engages in diplomatic negotiations or uses international law to resolve such disputes. On the other hand, the EU follows a path of cooperative dialogue to maintain peace and harmony among its member nations when it comes to territorial issues. Both areas tend to use multinational diplomacy or institutions like the UN to manage such disputes.