KIEV, UKRAINE - SEPTEMBER 14 : British Foreign Minister Boris Johnson (L) and Ukrainian Foreign Minister Pavlo Klimkin (R) attend a press conference in Kiev, Ukraine on September 15, 2016. (Photo by Hakan Caliskan/Anadolu Agency/Getty Images)
KIEV, UKRAINE - SEPTEMBER 14 : British Foreign Minister Boris Johnson (L) and Ukrainian Foreign Minister Pavlo Klimkin (R) attend a press conference in Kiev, Ukraine on September 15, 2016. (Photo by Hakan Caliskan/Anadolu Agency/Getty Images)