epa07200613 A handout photo made available by the Saudi Royal Court shows British Prime Minister Theresa May (C-L) and Saudi Crown Prince Mohammad bin Salman (C-R) sit for a bilateral on the sidelines of the G20 summit in Buenos Aires, Argentina, 30 November 2018. The G20 Summit (or G-20 or Group of Twenty) takes place from 30 November to 01 December 2018 and brings together the heads of State or Government of the 20 largest economies.  EPA/BANDAR ALGALOUD/SAUDI ROYAL COURT HANDOUT  HANDOUT EDITORIAL USE ONLY/NO SALES
British Prime Minister Theresa May and Saudi Crown Prince Mohammad bin Salman sit for a bilateral on the sidelines of the G20 summit. EPA

UK prime minister discusses Khashoggi killing with Saudi Crown Prince