Sanctioned and wanted for war crimes in the West and reviled at home by the millions fighting his army, Myanmar’s leader Min Aung Hlaing is this week set for a red-carpet welcome in Thailand, as the diplomatic deep freeze begins to thaw. The former general toppled Aung San Suu Kyi’s elected government in a 2021 coup, sparking a civil war that has killed an estimated 100,000 people – mostly civilians – and cratered its economy, which had only just opened up after five decades of military...