SYDNEY, July 14 (Reuters) - Solomon Islands has denied suggestions by Australia and others its policing deal with Beijing is "a threat to the Pacific region peace" and says China will enhance the capability of its 1,500 police officers in cyber security and community policing. The U.S., Australia and New Zealand have called for Solomon Islands to "immediately" publish details of the three-year policing deal signed in Beijing on Monday, during a week-long visit by Prime Minister Manasseh Sogavare to China, amid concern it will invite further regional contest. Chinese and Solomon Islands police ministers met on Tuesday, pledging to...