WASHINGTON - A North Korean missile launch on Tuesday was of a liquid-fueled Scud missile which only traveled a fraction of it's range, US officials said on Wednesday. Initially, the US military said North Korea had tested a KN-15 medium-range ballistic missile. 'We are now certain it was a liquid-fueled Scud,' said a senior White House official, speaking on the condition of anonymity. 'It spun out of control after going only a fraction of its range,' the official said.