Justin Trudeau points out Canada created a non-proliferating nuclear technology in the 1970s, called CANDU.
CANDU reactors do not require enriched uranium, eliminating proliferation concerns from highly enriching uranium.
CANDU reactors do not produce weaspon-grade Plutonium, eliminating proliferation concerns from the creation of weapons-grade Plutonium as can happen in certain research reactors and does happen in military reactors.