First Secretary of the French Socialist Party, Jean-Christophe Cambadelis speaks to the press following a meeting with French leaders of political parties and movements after Britain voted to leave the European Union the day before, on June 25, 2016 at the Elysee presidential Palace in Paris. As the 'Brexit' vote sent global financial markets into freefall, Moody's cut Britain's credit rating outlook to 'negative', saying the vote to pull out of the European Union could hurt its economic prospects. / AFP / GEOFFROY