The Canadian prime minister, Justin Trudeau, is expected to announce on Monday that he plans to step down, after a snowballing leadership crisis during which he lost support from within his own party. The prime minister’s office said he would speak about his political future from Rideau Cottage, his temporary residence, at 10.45 am. The press conference marks the first time that he will have answered questions from reporters since November. On Sunday evening, the Globe and Mail...