A trading board shows that Nikkei stock index on June 24, 2016 in Tokyo, Japan. As it became apparent that British voters would opt to leave the EU, markets across the globe began to tumble. The Nikkei index in Japan fell by over 1000 points, its largest one day drop since the Great East Japan Earthquake and Tsunami of March 2011. The pound also tumbled by over 10 percent against japanese yen. (Photo by Yohei Osada/AFLO)