This referendum comes at the worst possible time. The oil-rich province of Alberta will vote to decide if it wants to remain a Canadian province or start the legal process toward separation. Key points and original sources are listed below.

• This referendum comes at the worst possible time. The world has become more dangerous and divided. Some outside our borders are working to break us so they can own us, says Canadian Prime Minister Mark CarneyS1

• The oil-rich province of Alberta will vote to decide if it wants to remain a Canadian province or start the legal process toward separation. Carney warned that the US was trying the divide-and-rule tactic.S2