By Greg Waldron
A Pentagon report has highlighted major advances by the Chinese People's Liberation Army Air Force (PLAAF), with specific mention of the developmental Chengdu J-20 aircraft.
Washington believes the J-20 could achieve an "effective operational capability" by 2018, and suggests the aircraft's role is as not a fighter, but rather a long-range attack platform. It says engine technology is the main challenge China will face in developing the J-20.
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