US President Donald Trump’s hopes for a grand deal with Chinese President Xi Jinping are being undercut by American allies’ self-interested amplification of the “China threat”. This year’s Nanking massacre memorial was particularly poignant in light of Japanese Prime Minister Sanae Takaichi’s controversial remarks on Taiwan. Beijing warned that any attempt to challenge the post-war international order or undermine established historical truths would be “doomed to failure”. Meanwhile, Singaporean...