China has berated Japan after its leader appeared to suggest Japan might get involved if China launched an invasion of Taiwan. The dispute started last Friday when Japan's new Prime Minister, Sanae Takaichi, said that if China invaded the self-governing island, it could be a quote survival-threatening situation for Japan. In such circumstances, Japan could activate its forces in self-defence. China's foreign ministry described the remarks as egregious. The two have been locked in a heated