
DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: The World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' is held in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )

DAVOS, SWITZERLAND - JANUARY 17: Security measures are taken at Davos during the World Economic Forum (WEF) annual meeting which brings together business leaders and international political leaders to discuss 'Responsive and Responsible Leadership' in Davos, Switzerland on January 17, 2017. ( Dursun Aydemir - Anadolu Agency )