evidence: After World War Two, Japan surrendered and relinquished control of territory it had taken from China. Afterwards, Taiwan was officially considered occupied by the Republic of China (ROC), which began ruling with the consent of its allies, the US and UK. [...] Chiang's ROC government-in-exile at first claimed to represent the whole of China, which it intended to re-occupy. It held China's seat on the United Nations Security Council and was recognised by many Western nations as the only Chinese government. But by the 1970s some countries began to argue that the Taipei government could no longer be considered a genuine representative of the people living in mainland China.