European Parliament President Martin Schulz delivers a speech on his end of term as President, ahead of a voting session at the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Parliament President Martin Schulz delivers a speech on his end of term as President, ahead of a voting session at the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Parliament President Martin Schulz delivers a speech on his end of term as President, ahead of a voting session at the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler TPX IMAGES OF THE DAY

Members of the European Parliament take part in a voting session at the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

Members of the European Parliament take part in a voting session at the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker (R), talks with Nigel Farage, United Kingdom Independence Party (UKIP) member and MEP ahead of a debate at the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker addresses the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker addresses the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker addresses the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker is seen behind his reading desk before his address to the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker is seen behind his reading desk as he gestures ahead of his address to the European Parliament in Strasbourg, France, December 14, 2016. REUTERS/Vincent Kessler TPX IMAGES OF THE DAY

European Commission President Jean-Claude Juncker gestures as he arrives to attend a debate at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

European Parliament President Martin Schulz attends a debate at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker addresses the European Parliament during a debate in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

European Parliament President Martin Schulz attends a debate at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker addresses the European Parliament during a debate in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Slovakia's Prime Minister Robert Fico addresses the European Parliament during a debate in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Slovakia's Prime Minister Robert Fico addresses the European Parliament during a debate in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker (L) poses with Slovakia's Prime Minister Robert Fico (R) and European Parliament President Martin Schulz after they signed the Joint Declaration on the EU's legislative priorities for 2017, at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

European Commission President Jean-Claude Juncker (L) shakes hands with Slovakia's Prime Minister Robert Fico (R), as European Parliament President Martin Schulz looks on after they signed the Joint Declaration on the EU's legislative priorities for 2017, at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (R) and Lamiya Aji Bashar, both Iraqi women of the Yazidi faith, attends the award ceremony for their 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (L) and Lamiya Aji Bashar, both Iraqi women of the Yazidi faith, pose with the 2016 Sakharov Prize during an award ceremony at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (2ndL), Lamiya Aji Bashar (C,) her brother Vad (2ndR) and European Parliament President Martin Schulz (R) attend the award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Aji Bashar and Nadia Murad Basee Taha are both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (R) and Lamiya Aji Bashar, both Iraqi women of the Yazidi faith, attends the award ceremony for their 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Lamiya Aji Bashar reacts as she adresses the European Parliament during the award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Aji Bashar received the prize with Nadia Murad Basee Taha (not pictured), both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Lamiya Aji Bashar reacts as she adresses the European Parliament during the award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Aji Bashar received the prize with Nadia Murad Basee Taha (not pictured), both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Lamiya Aji Bashar adresses the European Parliament during the award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Aji Bashar received the prize with Nadia Murad Basee Taha (not pictured), both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Nadia Murad Basee Taha reacts during the award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Murad Basee Taha received the prize with Lamiya Aji Bashar (not pictured), both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Nadia Murad Basee Taha adresses the European Parliament during an award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Murad Basee Taha received the prize with Lamiya Aji Bashar (not pictured), both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Nadia Murad Basee Taha adresses the European Parliament during an award ceremony for the 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Murad Basee Taha received the prize with Lamiya Aji Bashar (not pictured), both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (L) adresses the European Parliament as Lamiya Aji Bashar looks on during an award ceremony for their 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Murad Basee Taha and Aji Bashar are both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (L) adresses the European Parliament as Lamiya Aji Bashar looks on during an award ceremony for their 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. Murad Basee Taha and Aji Bashar are both Iraqi women of the Yazidi faith. REUTERS/Vincent Kessler

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

Nadia Murad Basee Taha (L) and Lamiya Aji Bashar, both Iraqi women of the Yazidi faith attends the award ceremony for their 2016 Sakharov Prize at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (L) and Lamiya Aji Bashar, both Iraqi women of the Yazidi faith, pose with the 2016 Sakharov Prize during an award ceremony at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler

Nadia Murad Basee Taha (L) and Lamiya Aji Bashar, both Iraqi women of the Yazidi faith, pose with the 2016 Sakharov Prize during an award ceremony at the European Parliament in Strasbourg, France, December 13, 2016. REUTERS/Vincent Kessler TPX IMAGES OF THE DAY

European Union foreign policy chief Federica Mogherini addresses the European Parliament during a debate on the situation in Syria in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

European Union foreign policy chief Federica Mogherini adjusts her earphones as she arrives to address the European Parliament during a debate on the situation in Syria in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

European Union foreign policy chief Federica Mogherini addresses the European Parliament during a debate on the situation in Syria in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

European Union foreign policy chief Federica Mogherini addresses the European Parliament during a debate on the situation in Syria in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

European Union foreign policy chief Federica Mogherini addresses the European Parliament during a debate on the situation in Syria in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

France's Member of the European Parliament Rachida Dati arrives to take part in a voting session at the European Parliament in Strasbourg, France November 22, 2016. REUTERS/Vincent Kessler

United Kingdom's MEPs (L to R) Steven Woolfe, Diane James and Diane Dodds talk after a voting session at the European Parliament in Strasbourg, France November 22, 2016. REUTERS/Vincent Kessler

United Kingdom's Member of the European Parliament Steven Woolfe takes part in a voting session at the European Parliament in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

France's member of the European Parliament Michele Alliot-Marie takes part in a voting session at the European Parliament in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

Marine Le Pen (R), French National Front (FN) political party leader and Member of the European Parliament, arrives with fellow MEP and FN vice-president Florian Philippot to attend a voting session at the European Parliament in Strasbourg, France November 22, 2016. REUTERS/Vincent Kessler

France's Member of the European Parliament Rachida Dati (R) arrives to take part, besides fellow MEP Michel Dantin, in a voting session at the European Parliament in Strasbourg, France November 22, 2016. REUTERS/Vincent Kessler

Marine Le Pen (R), French National Front (FN) political party leader and Member of the European Parliament, arrives with fellow MEP and FN vice-president Florian Philippot to attend a voting session at the European Parliament in Strasbourg, France November 22, 2016. REUTERS/Vincent Kessler

Marine Le Pen (R), French National Front (FN) political party leader and Member of the European Parliament, arrives with fellow MEP and FN vice-president Florian Philippot to attend a voting session at the European Parliament in Strasbourg, France November 22, 2016. REUTERS/Vincent Kessler

Marine Le Pen, French National Front (FN) political party leader and Member of the European Parliament/ takes part in a voting session at the European Parliament in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

Members of the European Parliament take part in a voting session at the European Parliament in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

Members of the European Parliament take part in a voting session at the European Parliament in Strasbourg, France, November 22, 2016. REUTERS/Vincent Kessler

Outgoing MEP Richard Howitt of the U.K. (C) is aplauded by fellow MEP's as he takes part in his last voting session at the European Parliament in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

Outgoing MEP Richard Howitt of the U.K. (L) is comforted by fellow MEP Pier Antonio Panzeri, both of the Group of the Progressive Alliance of Socialists and Democrats of the European Parliament, as he takes part in his last voting session in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

The plenary room of the European Parliament is seen on the screen of a camera during a voting session in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

Marine Le Pen, French National Front (FN) political party leader and Member of the European Parliament, waits for the start of a voting session at the European Parliament in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

Members of the Confederal Group of the European United Left of the European Parliament display posters with the words "stop CETA" as they take part in a voting session at the European Parliament in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

French Member of the European Parliament Jean-Luc Melenchon (L), member of the French far-left Parti de Gauche, displays a poster with the words "stop CETA" as he takes part in a voting session at the European Parliament in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

A Member of the European Parliament displays a poster with the words "stop CETA" as he takes part in a voting session at the European Parliament in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler

French Member of the European Parliament Jean-Luc Melenchon, member of the French far-left Parti de Gauche, displays a poster with the words "stop CETA" as he takes part in a voting session at the European Parliament in Strasbourg, France, October 26, 2016. REUTERS/Vincent Kessler