Sikh leader's murder in Canada shines spotlight on shadowy Indian spy agency

Espionage lies at the heart of the diplomatic spat. If Trudeau’s allegations are true, an assassination carried out by RAW agents on North American soil is unprecedented. "We don’t have any credible evidence that this kind of thing has been done before on Western soil by RAW. It would be a first,” said Walter Ladwig, a South Asia security expert at the London-based Royal United Services Institute.