Tensions escalate between Canada and India over killing of outspoken Sikh leader

India and Canada are caught up in a tense diplomatic showdown over the assassination of a Canadian Sikh separatist leader in British Columbia. Prime Minister Justin Trudeau this week linked the killing of Hardeep Singh Nijjar to India's government. Both countries have since expelled top diplomats. Bloomberg columnist Bobby Ghosh joins Amna Nawaz to discuss.