China's debate over what ï¿½energy securityï¿½ is and how it can be achieved has evolved considerably over the past decade. raditionally, Chinese officials and analysts have been most worried about China's mounting oil imports, and they have expressed considerable wariness of international energy markets and institutions. This narrow and relatively nationalistic view of China's energy-security challenge has been challenged on several different fronts, however, particularly in the past five years. Prominent analysts now call for a more positive approach to international markets and institutions, and some argue that external dependence is a less important energy security challenge than the shortcomings of China's own energy system. China's broadening debate over energy security represents an opportunity for the outside world as it engages China on energy and climate change in the years ahead.