US Secretary of State John Kerry (L) and High Representative of the European Union (EU) for Foreign Affairs and Security Policy Federica Mogherini hold a joint press conference after their meeting at the EU headquarters in Brussels on June 27, 2016. US Secretary of State John Kerry on June 27 urged European Union members not to 'lose their head' after Britain voted to become the first member of the 28-nation bloc to leave. / AFP / JOHN
{"Image ImageDescription": "US Secretary of State John Kerry (L) and High Representative of the European Union (EU) for Foreign Affairs and Security Policy Federica Mogherini hold a joint press conference after their meeting at the EU headquarters in Brussels on June 27, 2016. \nUS Secretary of State John Kerry on June 27 urged European Union members not to \"lose their head\" after Britain voted to become the first member of the 28-nation bloc to leave. / AFP / JOHN THYS        (Photo credit should read JOHN THYS/AFP via Getty Images)"}