Iran says Ukrainian plane turned back before crashing

Iranian authorities have said a Ukrainian airliner, which crashed outside Tehran with the loss of all 176 people on board, had turned back after suffering a problem, as Ukrainian experts joined the investigation Thursday. Both Canada and the United States called for a full investigation to determine the cause of Wednesday’s crash, which came shortly after Tehran launched missiles at US forces in Iraq in response to the killing of a top Iranian general in a US drone strike in Baghdad. There was no immediate indication that foul play may have caused the Ukraine International Airlines (UIA) plane to go down soon after take-off, and Ukrainian President Volodymyr Zelensky warned against speculating on the crash causes.