SAINT PETERSBURG, RUSSIA - JUNE 18: Tony Blair, former U.K. prime minister, attends a session of the SPIEF2015 Saint Petersburg International Economic Forum on June 18, 2015 in Saint Petersburg, Russia. (Photo by Oleg Nikishin/Epsilon/Getty Images)
SAINT PETERSBURG, RUSSIA - JUNE 18: Tony Blair, former U.K. prime minister, attends a session of the SPIEF2015 Saint Petersburg International Economic Forum on June 18, 2015 in Saint Petersburg, Russia. (Photo by Oleg Nikishin/Epsilon/Getty Images)