TOKYO, Dec 27 (Reuters) - North Korea may slow the pace of disablement of its nuclear facilities, blaming a delay in the delivery of energy aid promised under a disarmament deal, Kyodo news agency reported, quoting a Pyongyang official. "There is a delay in the implementation of economic compensation obligations to be undertaken by the other countries in the six-party talks," Hyun Hak Bong, deputy director of the North Korean Foreign Ministry's American affairs bureau, was quoted as saying late on Wednesday. "We have no choice but to take measures to adjust" he added, referring to the pace of disablement...