Trump looms over Canada's election as campaign begins

Canada's newly appointed Prime Minister Mark Carney has called a snap election, sending the country to the polls on 28 April.

The election comes as Canada faces a trade war with the US and calls from President Donald Trump for it to become the 51st American state, issues which are expected to be top of mind for voters.

It also comes nine days after Carney, a Liberal, was sworn in as Canada's prime minister following Justin Trudeau's resignation.