Joe Kaeser, President and Chief Executive Officer of Siemens, Lubna Olayan, Chief Executive Officer and Deputy Chairperson of Olayan Financing Company and Thomas Kennedy, Chairman and Chief Executive Officer Raytheon Company, attend the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Saudi Oil Minister, Khalid al-Falih, arrives to attend the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Christine Lagarde, International Monetary Fund (IMF) Managing Director, is seen on a screen as she attends the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Participants walk during the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Saudi Crown Prince Mohammed bin Salman, Masayoshi Son, SoftBank Group Corp. Chairman and CEO, and Christine Lagarde, International Monetary Fund (IMF) Managing Director, attend the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017. Image for illustrative purpose.

People attend the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Saudi Oil Minister, Khalid al-Falih, arrives at the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017. Image for illlustrative purposes.

Mohamed Alabbar (L), Emaar Properties Chairman, gestures during the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Amin Nasser, President and Chief Executive Officer of Aramco arrives to the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Participants attend the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Participants walk during the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Saudi Crown Prince Mohammed bin Salman, Masayoshi Son, SoftBank Group Corp. Chairman and CEO, Christine Lagarde, International Monetary Fund (IMF) Managing Director, and Ibrahim Abdulaziz Al-Assaf, Saudi Arabia Minister of State, attend the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

A woman walks past a sign during the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Saudi Crown Prince Mohammed bin Salman attends the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017. Reuters/Hamad I Mohammed

A man walks past a sign at the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Image used for illustrative purpose. A woman uses her laptop during the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.

Image used for illustrative purpose. Saudi Crown Prince Mohammed bin Salman attends the Future Investment Initiative conference in Riyadh, Saudi Arabia October 24, 2017.