In a startling admission during a public inquiry, Canadian Prime Minister Justin Trudeau said that Canada had no "hard evidentiary proof" to support allegations linking Indian government agents to the killing of Khalistani terrorist Hardeep Singh Nijjar last year. The diplomatic fallout between the two countries worsened when India expelled six Canadian diplomats following Trudeau's allegations. Will India and Canada find common ground, or will the diplomatic rift continue to widen? Can Trudeau separate domestic political considerations with diplomatic relationships? Watch 'The Big Fight'.