Just when it seemed the tide had finally turned in Theresa May's favour, she suffered an embarrassing defeat in the House of Commons, with parliament now having greater say on a final Brexit deal. Will that infighting back home derail Brexit negotiations? Are the differences within the Tories irreconcilable? Could Britain be headed for a political Big Bang, like the one witnessed in France this year, with a complete redrawing of the political map? Produced by Yi SONG, François WIBAUX and Van MEGUERDITCHIAN.