US President Donald Trump said he would be “quite disappointed” if his Chinese counterpart Xi Jinping broke a personal promise not to arm Iran. His comment on Wednesday came alongside renewed accusations that long-time US health official Anthony Fauci, who led the US response to Covid-19, helped shield Beijing from scrutiny over the origins of the pandemic. Separately, Reuters reported that Iran was expected to receive 300 to 400 Chinese-made shoulder-fired air-defence missile systems within...