Chile's President Sebastian Pinera and former Chilean Presidents Michelle Bachelet, Eduardo Frei and Ricardo Lagos gather in a work meeting about the maritime claim from Boliva at the International Court of Justice in the Hague, in Santiago, Chile March 14, 2018. Alex Ibanez/Chilean Presidency/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. 

Chile's President Sebastian Pinera and former Chilean Presidents Michelle Bachelet, Eduardo Frei and Ricardo Lagos gather in a work meeting about the maritime claim from Boliva at the International Court of Justice in the Hague, in Santiago, Chile March 14, 2018. Alex Ibanez/Chilean Presidency/Handout via REUTERS ATTENTION EDITORS - THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. 

FC Basel's (FCB) Alex Frei is challenged by Florian Stahel (L) of FC Luzern during their Swiss Super League soccer match in Basel July 21, 2012. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's (FCB) Alex Frei is challenged by Florian Stahel (L) of FC Luzern during their Swiss Super League soccer match in Basel July 21, 2012. REUTERS/Arnd Wiegmann (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's Alex Frei practices during an official training session before their Champions League Group C soccer match against Otelul Galati on Tuesday at the National Arena in Bucharest, November 21, 2011. REUTERS/Bogdan Cristel (ROMANIA - Tags: SPORT SOCCER) 

FC Basel's Alex Frei practices during an official training session before their Champions League Group C soccer match against Otelul Galati on Tuesday at the National Arena in Bucharest, November 21, 2011. REUTERS/Bogdan Cristel (ROMANIA - Tags: SPORT SOCCER) 

FC Basel's Alex Frei (R) shakes hands with coach Torsten Fink during their Swiss Super League soccer match against FC Thun in Thun September 24, 2011. The match ended 1-1. REUTERS/Pascal Lauener (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's Alex Frei (L) fights for the ball against FC Luzern's Tomislav Puljic (R) during their Super League soccer match in Emmenbruecke, outside Lucerne February 27, 2011. REUTERS/Romina Amato (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's Alex Frei (R) celebrates his goal against FC Luzern with team mates Xherdan Shaqiri (L) and Marco Streller (C) during their Super League soccer match in Emmenbruecke, outside Lucerne February 27, 2011. REUTERS/Romina Amato (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's Alex Frei (R) scores a goal past FC Luzern's Tomislav Puljic during their Super League soccer match in Emmenbruecke, outside Lucerne February 27, 2011. REUTERS/Romina Amato (SWITZERLAND - Tags: SPORT SOCCER) 

Swiss Defence and Sport Minister Ueli Maurer (bottom) welcomes Swiss national soccer team player Alexander Frei (C) and his team-mates during a reception in the Swiss Federal Palace in Bern May 25, 2010. Picture taken with a fish-eye lens. REUTERS/Michael Buholzer (SWITZERLAND - Tags: SPORT SOCCER WORLD CUP POLITICS) 

FC Basel's (FCB) Alex Frei lies on the ground as he is injured during their Swiss Super League soccer match against FC Aarau in Basel February 20, 2010. REUTERS/Michael Buholzer (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's (FCB) Alex Frei is carried on a stretcher after he is injured during their Swiss Super League soccer match against FC Aarau in Basel February 20, 2010. REUTERS/Michael Buholzer (SWITZERLAND - Tags: SPORT SOCCER) 

FC Basel's (FCB) Alex Frei lies on the ground after he is injured during their Swiss Super League soccer match against FC Aarau in Basel February 20, 2010. REUTERS/Michael Buholzer (SWITZERLAND - Tags: SPORT SOCCER) 

Players Marco Streller, Hakan Yakin, Benjamin Huggel, Alex Frei, Blaise Nkufo and Johan Volanthen (RtoL) take part at a training session of the Swiss national soccer team in Basel August 10, 2009. Switzerland will play in a friendly match against Italy in Basel on August 12. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Players Benjamin Huggel, Alex Frei, Hakan Yakin, Stefan Lichtsteiner and Johan Volanthen (LtoR) take part at a training session of the Swiss national soccer team in Basel August 10, 2009. Switzerland will play in a friendly match against Italy in Basel on August 12. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Players Hakan Yakin and Alex Frei (L) take part at a training session of the Swiss national soccer team in Basel August 10, 2009. Switzerland will play in a friendly match against Italy in Basel on August 12. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Players Hakan Yakin and Alex Frei (R) take part at a training session of the Swiss national soccer team in Basel August 10, 2009. Switzerland will play in a friendly match against Italy in Basel on August 12. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Striker Alex Frei runs past coach Ottmar Hitzfeld (R) during a training session of the Swiss national soccer team in Basel August 10, 2009. Switzerland will play in a friendly match against Italy in Basel on August 12. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

FC Basel's (FCB) Alex Frei (L) receives a red card from referee Massimo Busacca as his team mate Benjamin Huggel stands beside during their during their Swiss Super League soccer match against FC Zurich (FCZ) in Basel August 9, 2009. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

FC Basel's (FCB) Alex Frei (R to L) stands beside as Alain Rochat of FC Zurich (FCZ) receives a red card from referee Massimo Busacca during their during their Swiss Super League soccer match in Basel August 9, 2009. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

FC Basel's (FCB) Alex Frei (C) kicks the ball as Hannu Tihinen (2nd L) of FC Zurich (FCZ) stands beside during their during their Swiss Super League soccer match in Basel August 9, 2009. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

FC Basel's (FCB) Alex Frei reacts during a during their Swiss Super League soccer match against FC Luzern in Basel August 2, 2009. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei looks at the ball during a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER HEADSHOT) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei poses together with a young supporter for a photograph after a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei talks to journalists before a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER HEADSHOT) 

Swiss soccer club FC Basel's (FCB) coach Thorsten Fink (R) watches new striker Alex Frei during a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) coach Thorsten Fink (R) watches new striker Alex Frei during a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei (R) and his team mate Benjamin Huggel arrive on bicycles before a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei (L) and his team mate Benjamin Huggel arrive on bicycles before a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) coach Thorsten Fink (2ndR) looks at new striker Alex Frei (3rdR) and his team mates during a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei (L) and his team mate Carlitos jump for the ball during a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

Swiss soccer club FC Basel's (FCB) new striker Alex Frei (C) and his team mate Carlitos (R) jump for the ball as Sabri Boumelaha stands beside during a training session in Basel July 20, 2009. Switzerland?s record scorer Frei, 30, has completed a move to Basel from Borussia Dortmund, and signed a three-year contract for the club where he started his career. REUTERS/Arnd Wiegmann (SWITZERLAND SPORT SOCCER) 

New FC Basel's (FCB) player Alex Frei (R) and club President Gigi Oeri attend Frei's presentation ceremony in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

New FC Basel's (FCB) player Alex Frei addresses supporters as he wears his new jersey during his presentation ceremony in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

New FC Basel's (FCB) player Alex Frei puts his new jersey on during his presentation ceremony in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

New FC Basel's (FCB) player Alex Frei acknowledges supporters as he wears his new jersey during his presentation ceremony in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

New FC Basel's (FCB) player Alex Frei acknowledges supporters as he wears his new jersey during his presentation ceremony in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

New FC Basel (FCB) player Alex Frei acknowledges supporters as he wears his new jersey during his presentation ceremony in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND) 

FC Basel's (FCB)'s new signing Alex Frei attends his presentation news conference in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

FC Basel's (FCB)'s new signing Alex Frei attends his presentation news conference in Basel July 19, 2009. REUTERS/Christian Hartmann (SWITZERLAND SPORT SOCCER) 

Portugal's coach Luiz Felipe Scolari (R) embraces Switzerland's Alex Frei as they walk back to the dugout at the start of the second half during their Group A Euro 2008 soccer match at St Jakob Park in Basel, June 15, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei attends a training session for Euro 2008 in Freienbach June 13, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland soccer captain Alex Frei arrives at a public training session for Euro 2008 in Freienbach June 12, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland soccer captain Alex Frei arrives at a public training session for Euro 2008 in Freienbach June 12, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei (R) leaves the pitch after the Group A Euro 2008 soccer match against Turkey at St Jakob Park Stadium in Basel, June 11, 2008. REUTERS/Fatih Saribas (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei (4thR) stands with his team mates before their Group A Euro 2008 soccer match against Turkey at St Jakob Park Stadium in Basel, June 11, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei (C) takes a seat on the bench before their Group A Euro 2008 soccer match against Turkey at St Jakob Park Stadium in Basel, June 11, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei (L) walks past the bench before their Group A Euro 2008 soccer match against Turkey at St Jakob Park Stadium in Basel, June 11, 2008. REUTERS/Stefan Wermuth (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei (L) walks onto the pitch with team mates before their Group A Euro 2008 soccer match against Turkey at St Jakob Park Stadium in Basel, June 11, 2008. REUTERS/Pascal Lauener (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Injured Switzerland captain Alex Frei walks across the pitch before their Group A Euro 2008 soccer match against Turkey at St Jakob Park Stadium in Basel, June 11, 2008. REUTERS/Pascal Lauener (SWITZERLAND) MOBILE OUT. EDITORIAL USE ONLY 

Switzerland's Alex Frei is seen on a giant TV screen in the fan zone in Zurich June 7, 2008, as he leaves the pitch after being injured during the Group A Euro 2008 soccer match against Czech Republic. The opening match Switzerland vs Czech Republic in the northern Swiss city of Basel started the Euro 2008 European soccer championships in Austria and Switzerland on Saturday. REUTERS/Arnd Wiegmann (SWITZERLAND) 

Borussia Dortmund's Swiss forwarder Alex Frei (L) challenges Mark van Bommel, Dutch midfielder of Bayern Munich during their German soccer cup DFB Pokal final in Berlin, April 19, 2008. REUTERS/Kai Pfaffenbach(GERMANY) 

Michael Ballack (L) of Germany fights for the ball with Alexander Frei (R) and Valon Behrami (rear) of Switzerland during their friendly soccer match in Basel March 26, 2008. REUTERS/Alex Grimm (SWITZERLAND) 

Borussia Dortmund's Tinga celebrates a goal with team mates Alexander Frei (R-L) and Mladen Petric during their German Cup soccer semi-final match against Carl-Zeiss Jena in Dortmund March 18, 2008. REUTERS/Alex Grimm (GERMANY) 

Borussia Dortmund's Tinga (C) celebrates a goal with team mates Alexander Frei (L) and Antonio Rukavina during their German Cup soccer semi-final match against Carl-Zeiss Jena in Dortmund March 18, 2008. REUTERS/Alex Grimm (GERMANY) 

Borussia Dortmund's Alexander Frei, Philipp Degen and Marc Andre Kruska celebrate as Bayern Munich's Claudio Pizarro (L-R) reacts after their team's German Bundesliga soccer match in Dortmund January 26, 2007. Dortmund won the match 3-2. REUTERS/Alex Grimm (GERMANY) ONLINE CLIENTS MAY USE UP TO SIX IMAGES DURING EACH MATCH WITHOUT THE AUTHORITY OF THE DFL. NO MOBILE USE DURING THE MATCH AND FOR A FURTHER TWO HOURS AFTERWARDS IS PERMITTED WITHOUT THE AUTHORITY OF THE DFL. FOR MORE INFORMATION PLEASE CONTACT DFL DIRECTLY 

Borussia Dortmund's Alexander Frei (R) celebrates a goal with team mate Philipp Degen during their team's German Bundesliga soccer match against Bayern Munich in Dortmund January 26, 2007. REUTERS/Alex Grimm (GERMANY) ONLINE CLIENTS MAY USE UP TO SIX IMAGES DURING EACH MATCH WITHOUT THE AUTHORITY OF THE DFL. NO MOBILE USE DURING THE MATCH AND FOR A FURTHER TWO HOURS AFTERWARDS IS PERMITTED WITHOUT THE AUTHORITY OF THE DFL. FOR MORE INFORMATION PLEASE CONTACT DFL DIRECTLY 

Borussia Dortmund's Alexander Frei celebrates a goal during his team's German Bundesliga soccer match against Bayern Munich in Dortmund January 26, 2007. REUTERS/Alex Grimm (GERMANY) ONLINE CLIENTS MAY USE UP TO SIX IMAGES DURING EACH MATCH WITHOUT THE AUTHORITY OF THE DFL. NO MOBILE USE DURING THE MATCH AND FOR A FURTHER TWO HOURS AFTERWARDS IS PERMITTED WITHOUT THE AUTHORITY OF THE DFL. FOR MORE INFORMATION PLEASE CONTACT DFL DIRECTLY 

Borussia Dortmund's Alexander Frei celebrates a goal during his team's German Bundesliga soccer match against Bayern Munich in Dortmund January 26, 2007. REUTERS/Alex Grimm (GERMANY) ONLINE CLIENTS MAY USE UP TO SIX IMAGES DURING EACH MATCH WITHOUT THE AUTHORITY OF THE DFL. NO MOBILE USE DURING THE MATCH AND FOR A FURTHER TWO HOURS AFTERWARDS IS PERMITTED WITHOUT THE AUTHORITY OF THE DFL. FOR MORE INFORMATION PLEASE CONTACT DFL DIRECTLY