The U.S. and other "Five Eyes" countries on Wednesday warned that China has been circumventing measures aimed at halting its recruitment of current and former Western military pilots and other personnel to train its military.

"Western recruits who train the PLA (Peoples Liberation Army) may increase the risk of future conflict by reducing our deterrence capabilities," said a public bulletin issued by the U.S., British, Canadian, Australian and New Zealand intelligence services.

The notice is the latest warning by the English-speaking "Five Eyes" intelligence-sharing alliance about rising concerns with Chinese government-directed espionage, cyberhacking and intellectual property theft as Beijing's growing might has roiled relations with Washington and its allies.