The PLA Navy (PLAN)'s capabilities in key areas (assets, trained personnel, experience) are currently insufficient to support long-range sea lanes of communication (SLOC) defense missions. With sufficient effort, Beijing may eventually overcome these obstacles, but it would probably also have to acquire some form of overseas basing access, which its foreign policy still proscribes.
F-22 Raptor : Economics versus Technology
The US Department of Defence has been contemplating whether to lift the ban on F-22 exports, the fifth generation stealth aircraft. This would mean that many of the US allies namely Japan, Israel and others might become interested in procuring the aircraft. For Japan it would provide much needed air superiority to the Japanese Air Force concerned at North Korean long range missiles and nuclear capabilities (even though the US has stationed a dozen F-22s at Kadena air base in Japan since May 2009). Israel would like to get the aircraft to launch any pre-emptive strike on Iran.