One interpretation, which was adopted during the Cold War, is that either the PRC or the ROC is the sole rightful government of all China and that the other government is illegitimate. While much of the western bloc maintained relations with the ROC until the 1970s under this policy, much of the eastern bloc maintained relations with the PRC. While the government of the ROC considered itself the remaining holdout of the legitimate government of a country overrun by what it thought of as Communist rebels, the PRC claimed to have succeeded the ROC in the Chinese Civil War. Though the ROC no longer portrays itself as the sole legitimate government of China, the position of the PRC remained unchanged until the early 2000s, when the PRC began to soften its position on this issue to promote Chinese reunification.