"Chinese Weapons of War Japan Should Fear" Topic

"Over the last several years Sino-Japanese relations have reached low after new low—all thanks to claims and counterclaims over the Senkaku islands (China refers to them as the Diaoyu islands). The relationship between the two countries, which had been tepid at best—quickly cooled beginning in 2010 as both sides jockeyed for position over the disputed islands.

Japan's Cold War adversary, the Soviet Union, threatened the country primarily in the north with submarines, bombers, fighters, and a theoretical invasion by sea. China is a different sort of strategic threat to Japan, being most active in the more southern East China Sea, with its military reach extending to the Senkaku and Ryukyu Islands as well as the Japanese mainland.

The challenge posed by the People's Liberation Army has shaken a complacent Japanese government, which had left its national security establishment virtually unchanged since the 1980s. A national security council similar to that in the United States has been formed, secrecy laws have been passed and Japan's defenses are shifting southward. Here are a five weapon systems that Tokyo should worry about as tensions with Beijing continue to simmer:…"
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Amicalement
Armand

Use of most of those systems would trigger US retaliation. Not saying there will not be a day when they say so what.