Nuclear vessels on show

China plans to display its nuclear submarines this week in the first known public appearance of some its most potent warships. The vessels will appear at the international fleet review in Qingdao, deputy Navy commander Ding Yiping was quoted as saying by the official Xinhua News Agency. The People's Liberation Army, controlled by the Communist Party, has traditionally kept its best weaponry tightly under wraps, but there has been a growing openness in recent years.