The nascent entente between Asia's richest democracy and its largest was powerfully showcased by Japanese Prime Minister Shinzo Abe's presence as the chief guest at India's Jan. 26 Republic Day, just weeks after the historic Indian tour of Emperor Akihito and Empress Michiko. Abe returned home with an invitation for Japan to join Indian-sponsored naval exercises with the United States and to invest in infrastructure development in India's sensitive northeast, a sizable slice of which China claims.

The ascent of an increasingly assertive and revanchist China is beginning to trigger geopolitical realignments in Asia, in keeping with balance-of-power theory. The new bonds between a politically resurgent Japan and a strategically transforming India are an important example of this trend.

A Japan-India democratic axis, with U.S. support, can potentially reshape the Asian strategic landscape and block the rise of a Sino-centric Asia.