When India and Canada expelled each other’s diplomats in the past few days, the exchange escalated a tussle over a rash of attacks on Sikhs living in Canada in recent years and spurred headlines around the globe.

The diplomatic rift has suddenly grown more stark as Canada amplifies its accusations that India is directing lethal operations abroad.

Twice since July 2022, Moninder Singh, spokesperson for a Sikh advocacy group in Canada's British Columbia province, has had police come to his door in the Vancouver suburb of Surrey. Twice, Singh said,