Malaysia’s opposition was thrown into fresh uncertainty on Tuesday by the surprise resignation of its coalition chairman, former prime minister Muhyiddin Yassin, capping months of internal bickering over leadership with less than two years left before national polls must be held. Muhyiddin, who formed the Malay nationalist Perikatan Nasional (PN) coalition in 2020 while he was still in power, made his announcement after rumours swirled overnight that he had bowed to pressure from coalition...