Australia's Prime Minister Tony Abbott (L) offically welcomes Saudi Arabia's Crown Prince Salman bin Abdulaziz (R) to the G20 Leaders' Summit in Brisbane on November 15, 2014.  Australia is hosting the leaders of the world's 20 biggest economies for the G20 summit in Brisbane on November 15 and 16.  AFP PHOTO/William West        (Photo credit should read WILLIAM WEST/AFP/Getty Images)