The One-China Principle is also a requirement for any political entity to establish diplomatic relations with the People's Republic of China. The PRC has traditionally attempted to get nations to recognize that "the Government of the People's Republic of China is the sole legal government of China ... and Taiwan is an inalienable part of the territory of the People's Republic of China." However, many nations are unwilling to make this particular statement and there was often a protracted effort to find language regarding one China that is acceptable to both sides. Almost all countries use terms such as "respects", "acknowledge", "understand", "take note of", which does not recognize PRC sovereignty over Taiwan and other ROC governed territories. This strategic ambiguity in the language used provides the basis for countries to have formal ties with People's Republic of China and maintain unofficial ties to the Republic of China.