Each, however, is fully determined to prove its willingness to go to war if provoked and so is willing to play a game of military chicken in the waters (and air space) off China's coast. In the process, each is making the outbreak of war, however unintended, increasingly likely.
History tells us that conflicts don't always begin due to planning and intent. Some, of course, start that way, as was the case, for instance, with Hitler's June 1941 invasion of the Soviet Union and Japan's December 1941 attacks on the Dutch East Indies and Pearl Harbor. More commonly, though, countries have historically found themselves embroiled in wars they had hoped to avoid.