Theresa May, U.K. prime minister, center, shakes hands with dignitaries as King Salman bin Abdulaziz, Saudi Arabia's king, right, looks on during their meeting at Al-Yamamah Palace in Riyadh, Saudi Arabia, on Wednesday, April 5, 2017. May plans to help Saudi Arabia lower its dependency on oil exports and increase the participation of women in the workforce as the Gulf kingdom seeks to modernize its economy. Photographer: Simon Dawson/Bloomberg via Getty Images