Canada: Trudeau on back foot as frustration builds over PM's climate strategy

Several provinces unhappy with PM's national carbon tax, while green groups oppose government investment in fossil fuels

When Justin Trudeau swept into power in 2015, he pledged to make fighting climate change a top priority for his government.

Three years later, Canada's prime minister is on the defensive, scrambling to both revive his party's unravelling climate strategy as a growing number of provinces refuse to participate in national carbon tax - and to temper frustrations over his government's continued investment in the fossil fuel industry.