Russia is reportedly close to finalizing a major sale of advanced fighter aircraft to China worth $4 billion. Such a sale, newsworthy in itself, would have been hard to imagine as recently as a few years ago considering the history of previous agreements. The anticipated deal, first reported by Kommersant, sees the two sides “practically agreed on the delivery of 48 Su-35 multirole fighters, worth $4 billion, to China.” Some reports suggest that Chinese officials have dismissed talk of such a deal. But if true, an agreement like this would certainly make sense for Beijing, giving China access to an...