In a setback for champions of Brexit, the UK Supreme Court ruled that parliament ultimately holds the power to trigger the process to leave the European Union, and must have a say before the steps to exit the EU are triggered.

In this podcast, Oonagh Fitzgerald, director of the Centre for International Governance Innovation's International Law Research Program, joins CIGI's Mary Taws from London to discuss the implications of the decision.

From lead claimant Gina Miller's comments on the ruling's constitutional significance to what the decision means for Theresa May's plans, Oonagh shares the key takeaways from the court's ruling.

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