Intelligence Agencies Scramble to Investigate Canadian Spy Suspect

What did she see? The intelligence scramble to retrace an accused spy's footsteps

The arrest of Canadian Biwei Zhang on espionage allegations has set off a transatlantic intelligence scramble. From NATO headquarters to Canadian and European agencies, investigators are retracing a decade of internships and government work to determine what she accessed, what may have been compromised — and whether she was working alone.

By Murray Brewster