In the months since Canada and the United States accused India of carrying out assassination plots against Sikh separatist leaders on North American soil, a lingering question has hung over the accusations: Why would the Indian government take such a risk?

Inside India, the Sikh cause to carve out a land called Khalistan from the state of Punjab largely fizzled out decades ago. Yet the Indian government still frames the Khalistan movement as a threat to national security — for reasons more mundane but no easier to weed out.

India has repeatedly accused Khalistan-related activists in countries such as Pakistan, and, more recently, Canada of sponsoring gang warfare, drug trafficking and extortion in India. Proceeds from these crimes, according to India’s government, sustain a campaign of what Indian officials call terrorism in the name of a religious political movement.