Bangkok, the capital of Thailand, has been called "the most primate city on Earth", being roughly thirty-five times larger than Thailand's second-largest city of Chiang Mai. Taking the concept from his examination of the primate city during the 2010 Thai political protests and applying it to the role that primate cities play if they are national capitals, researcher Jack Fong noted that when primate cities like Bangkok function as national capitals, they are inherently vulnerable to insurrection by the military and the dispossessed. He cites the fact that most primate cities serving as national capitals contain major headquarters for the country. Thus, logistically, it is rather "efficient" for national targets to be contested since they are all in one major urban environment.