According to China source Pakistan Navy is interested in the J-11Bs with Russian engines. This appears to be counter-intuitive given the sensitive nature of Russia's copyright relations with China. However, it is possible that Pakistan may attempt to placate this sensitivity by buying Russian engines and paying royalties. It is also possible that Russia is smarting from India's recent rejection of Russian military gear and move towards Western sources. These all make for a great deal of controversy and are likely to keep arm-chair generals and military analysts busy in the foreseeable future.What is clear is that Pakistan and the PAF will get a significant boost, in fact a major leap in capabilities in the next 12-24 months.