Canada's counter-terror efforts face scrutiny after US helps stop suspect

Authorities point to challenges in balancing resources, civil liberties and safety as former intelligence official wonders: ‘How come the FBI had to tell us?’

Mike Cabana, Royal Canadian mounted police deputy commissioner, and assistant commissioner Jennifer Strachan speak at a news conference in Ottawa regarding Aaron Driver.
Photograph: Chris Wattie/Reuters

Troubled by his posts online that praised Isis and his correspondence with militants plotting attacks around the world, Canadian officials began watching Aaron Driver in 2014.
They soon went one step further, imposing a strict set of restrictions including reporting regularly to police and staying off social media.
But when …
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