Swiss Defense Minister Viola Amherd attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Defense Minister Viola Amherd attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Defense Minister Viola Amherd attends a news conference with Philippe Rebord, Chief of the Swiss Armed Forces, after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Defense Minister Viola Amherd attends a news conference with Philippe Rebord, Chief of the Swiss Armed Forces, after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Economic Minister Guy Parmelin attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Eric Scheidegger, Head of the Economic Policy Directorate at the Secretariat for Economic Affairs (SECO) attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Economic Minister Guy Parmelin attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Eric Scheidegger, Head of the Economic Policy Directorate at the Secretariat for Economic Affairs (SECO) attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Eric Scheidegger, Head of the Economic Policy Directorate at the Secretariat for Economic Affairs (SECO) attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Economic Minister Guy Parmelin attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Economic Minister Guy Parmelin attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Economic Minister Guy Parmelin attends a news conference after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Swiss Economic Minister Guy Parmelin (R) attends a news conference with Eric Scheidegger Head of the Economic Policy Directorate at the Secretariat for Economic Affairs (SECO) after the weekly governmental meeting in Bern, Switzerland, November 27, 2019. REUTERS/Denis Balibouse 

Italian Prime Minister Giuseppe Conte gestures as he talks during a news conference with Lebanese Prime Minister Saad al-Hariri at the governmental palace in Beirut, Lebanon February 7, 2019. REUTERS/Mohamed Azakir 

Britain's Prime Minister Theresa May and Poland's Prime Minister Mateusz Morawiecki speak to the media during a news conference after UK-Poland Inter-Governmental Consultations at Lancaster House in central London, Britain, December 20, 2018. Alastair Grant/Pool via REUTERS 

Britain's Prime Minister Theresa May and Poland's Prime Minister Mateusz Morawiecki speak to the media during a news conference after UK-Poland Inter-Governmental Consultations at Lancaster House in central London, Britain, December 20, 2018. Alastair Grant/Pool via REUTERS 

Britain's Prime Minister Theresa May and Poland's Prime Minister Mateusz Morawiecki speak to the media during a news conference after UK-Poland Inter-Governmental Consultations at Lancaster House in central London, Britain, December 20, 2018. Alastair Grant/Pool via REUTERS 

Britain's Prime Minister Theresa May and Poland's Prime Minister Mateusz Morawiecki speak to the media during a news conference after UK-Poland Inter-Governmental Consultations at Lancaster House in central London, Britain, December 20, 2018. Alastair Grant/Pool via REUTERS 

Lebanon's Prime Minister Saad al-Hariri and U.S. Secretary of State Rex Tillerson are seen during a news conference at the governmental palace in Beirut, Lebanon, February 15, 2018. REUTERS/Mohamed Azakir 

U.S. Secretary of State Rex Tillerson gestures as he talks during a joint news conference with Lebanon's Prime Minister Saad al-Hariri at the governmental palace in Beirut, Lebanon, February 15, 2018. REUTERS/Mohamed Azakir 

Lebanon's Prime Minister Saad al-Hariri talks during a joint news conference with U.S. Secretary of State Rex Tillerson at the governmental palace in Beirut, Lebanon, February 15, 2018. REUTERS/Mohamed Azakir 

U.S. Secretary of State Rex Tillerson gestures during a news conference at the governmental palace in Beirut, Lebanon, February 15, 2018. REUTERS/Mohamed Azakir 

U.S. Secretary of State Rex Tillerson gestures during a news conference at the governmental palace in Beirut, Lebanon, February 15, 2018. REUTERS/Mohamed Azakir 

Nadia Murad Basee Taha (C) and Lamiya Aji Bashar (R), both Iraqi women of the Yazidi faith receive their 2016 Sakharov Prize from European Parliament President Martin Schulz (L) during an award ceremony at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler 

European Union foreign policy chief Federica Mogherini holds a news conference after meeting Cuba's Foreign Minister Bruno Rodriguez at the EU Council in Brussels, Belgium, December 12, 2016. REUTERS/Francois Lenoir 

Cuba's Foreign Minister Bruno Rodriguez holds a news conference after meeting European Union foreign policy chief Federica Mogherini at the EU Council in Brussels, Belgium, December 12, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

European Commissioner for Migration and Home Affairs Dimitris Avramopoulos addresses a news conference at the EU Commission headquarters in Brussels, Belgium, December 8, 2016. REUTERS/Francois Lenoir 

U.S. Secretary of State John Kerry addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

U.S. Secretary of State John Kerry addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

U.S. Secretary of State John Kerry addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

U.S. Secretary of State John Kerry addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

U.S. Secretary of State John Kerry addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

U.S. Secretary of State John Kerry addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini grabs her bag as she leaves a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini and NATO Secretary-General Jens Stoltenberg leave a joint news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

NATO Secretary-General Jens Stoltenberg addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini and NATO Secretary-General Jens Stoltenberg address a joint news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

European Union foreign policy chief Federica Mogherini addresses a news conference during a NATO foreign ministers meeting at the Alliance headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 

International Committee of the Red Cross (ICRC) President Peter Maurer attends a news conference to launch the survey "People on War" in Geneva, Switzerland, December 5, 2016. REUTERS/Denis Balibouse 

International Committee of the Red Cross (ICRC) President Peter Maurer attends a news conference to launch the survey "People on War" in Geneva, Switzerland, December 5, 2016. REUTERS/Denis Balibouse 

International Committee of the Red Cross (ICRC) President Peter Maurer attends a news conference to launch the survey "People on War" in Geneva, Switzerland, December 5, 2016. REUTERS/Denis Balibouse 

International Committee of the Red Cross (ICRC) President Peter Maurer attends a news conference to launch the survey "People on War" in Geneva, Switzerland, December 5, 2016. REUTERS/Denis Balibouse 

International Committee of the Red Cross (ICRC) President Peter Maurer attends a news conference to launch the survey "People on War" in Geneva, Switzerland, December 5, 2016. REUTERS/Denis Balibouse 

U.N. Special Advisor for Syria Jan Egeland attends a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. Special Advisor for Syria Jan Egeland attends a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. mediator for Syria Staffan de Mistura leaves after a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. Special Advisor Jan Egeland (L) and U.N. mediator for Syria Staffan de Mistura listen to a question during a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. mediator for Syria Staffan de Mistura (R) attends a news conference next to U.N. Special Advisor Jan Egeland after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. mediator for Syria Staffan de Mistura attends a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. mediator for Syria Staffan de Mistura attends a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse 

U.N. mediator for Syria Staffan de Mistura attends a news conference after a meeting at the United Nations in Geneva, Switzerland, December 1, 2016. REUTERS/Denis Balibouse