When Prime Minister Justin Trudeau was elected in 2015, he promised sunny ways and "a real change." Over the last nine years, there's no doubt his government has focused on fighting climate change, advancing Indigenous reconciliation and lifting some Canadians out of poverty.

Bowing to pressure from opponents and allies alike, Justin Trudeau — whose championing of progressive politics rocketed him into the international spotlight as Canada’s prime minister but who has faced growing headwinds at home — announced Monday that he intends to resign as Liberal leader,