Bolivia's former vice president Alvaro Garcia Linera, Angelica Cuellar Vazquez, director of the faculty of political and social sciences at National Autonomous University of Mexico (UNAM), and John Mill Ackerman, activist and researcher at UNAM, take part in a conference at UNAM in Mexico City, Mexico, February 5, 2020. REUTERS/Carlos Jasso 

Soccer Football - XVIII Pan American Games - Lima 2019 - Women First Round Group A - Mexico v Colombia - San Marcos Stadium, Lima, Peru - August 3, 2019. Mexico coach Christopher Carlos Cuellar reacts. REUTERS/Susana Vera 

Soccer Football - Copa Sudamericana - Brazil's Flamengo v Chile's Palestino - San Carlos de Apoquindo stadium, Santiago, Chile - July 5, 2017. Joaquin Romo (L) of Palestino and Gustavo Cuellar of Flamengo in action. REUTERS/Rodrigo Garrido 

Colombian Foreign Ministers Maria Angela Holguin Cuellar (R) and United Arab Emirates Minister of Foreign Affairs Sheikh Abdullah bin Zayed Al Nahyan speak to the media after a meeting at San Carlos Palace in Bogota March 13, 2012. Sheikh Al Nahyan is in Colombia on a one-day official visit. REUTERS/John Vizcaino (COLOMBIA - Tags: POLITICS) 

Arsenal's Laurent Koscielny (C) is tackled by Aston Villa's Carlos Cuellar (L) and Darren Bent during their FA Cup soccer match at the Emirates Stadium in London January 29, 2012. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT SOCCER) 

Arsenal's Laurent Koscielny (L) is tackled by Aston Villa's Carlos Cuellar (C) and Darren Bent during their FA Cup soccer match at the Emirates Stadium in London January 29, 2012. REUTERS/Stefan Wermuth (BRITAIN - Tags: SPORT SOCCER) 

Aston Villa's Carlos Cuellar (L) tackles West Bromwich Albion's Jerome Thomas during their English Premier League soccer match at Villa Park in Birmingham, central England, December 11, 2010. REUTERS/Darren Staples (BRITAIN - Tags: SPORT SOCCER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS 

Lieutenant-General Ken Keen, deputy commander of the U.S. Army Southern Command, talks with Honduran Defence Minister Marlon Pascua (R) and Army Chief Carlos Cuellar (L) during the delivery of 25 trucks to the Honduran army forces in Tegucigalpa, June 8, 2010. The U.S. government had suspended military assistance to Honduras after the coup of June 28, 2009 against former President Manuel Zelaya. REUTERS/Edgard Garrido (HONDURAS - Tags: POLITICS MILITARY) 

Aston Villa's Carlos Cuellar (R) challenges Hull City's Jozy Altidore during their English Premier League soccer match in Hull, northern England, April 21, 2010. REUTERS/Nigel Roddis (BRITAIN - Tags: SPORT SOCCER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS 

Chelsea's Florent Malouda (R) is challenged by Aston Villa's Carlos Cuellar during their FA Cup semi-final soccer match at Wembley Stadium in London April 10, 2010. REUTERS/Toby Melville (BRITAIN - Tags: SPORT SOCCER)

Honduras' outgoing Army Chief and Military Chief of Staff General Romeo Vazquez waves to the crowd during a military ceremony in Tegucigalpa March 1, 2010. Vazquez was officially replaced by General Carlos Antonio Cuellar during the ceremony. REUTERS/Claudia Barrientos (HONDURAS - Tags: POLITICS MILITARY) 

Honduras' former Army Chief and Military Chief of Staff General Romeo Vazquez (L) hugs a woman during a military ceremony in Tegucigalpa March 1, 2010. Vazquez was officially replaced by General Carlos Antonio Cuellar. REUTERS/Claudia Barrientos (HONDURAS - Tags: POLITICS MILITARY) 

Honduras' President Porfirio Lobo (R) hugs outgoing Army Chief and Military Chief of Staff General Romeo Vazquez (L) as Honduras' first lady Rosa de Lobo looks on during a military ceremony in Tegucigalpa March 1, 2010. Vazquez was officially replaced by General Carlos Antonio Cuellar. REUTERS/Claudia Barrientos (HONDURAS - Tags: POLITICS MILITARY) 

Honduras' President Porfirio Lobo (C) rides in an army jeep accompanied by Defense Minister Marlon Pascua (L) and former Army Chief and Military Chief of Staff General Romeo Vazquez during a military ceremony in Tegucigalpa March 1, 2010. Vazquez was officially replaced by General Carlos Antonio Cuellar during the ceremony. REUTERS/Claudia Barrientos (HONDURAS - Tags: POLITICS MILITARY) 

Manchester United's Wayne Rooney (C) celebrates scoring as Aston Villa's James Collins (R) and Carlos Cuellar (L) react during their English League Cup final soccer match at Wembley Stadium in London February 28, 2010. REUTERS/ Eddie Keogh (BRITAIN - Tags: SPORT SOCCER) 

Crystal Palace's Neil Danns (L) reacts to a challenge from Aston Villa's Carlos Cuellar during their FA Cup fifth round replay soccer match at Villa Park in Birmingham, central England, February 24, 2010. REUTERS/Darren Staples (BRITAIN - Tags: SPORT SOCCER) 

Manchester United's Ryan Giggs tackles Aston Villa's Carlos Cuellar (R) during their English Premier League soccer match at Villa Park in Birmingham, central England, February 10, 2010. REUTERS/Darren Staples (BRITAIN - Tags: SPORT SOCCER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS 

Aston Villa's Carlos Cuellar (R) tackles Manchester United's Paul Scholes during their English Premier League soccer match at Villa Park in Birmingham, central England February 10, 2010. REUTERS/Darren Staples (BRITAIN - Tags: SPORT SOCCER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS 

Rapid Vienna's Nikica Jelalvic (L) and Aston Villa's Carlos Cuellar jump for a header during their UEFA Europa League play-off soccer match in Vienna August 20, 2009. REUTERS/Herwig Prammer (AUSTRIA SPORT SOCCER) 

Aston Villa's player Carlos Cuellar (L) and goalkeeper Brad Guzan celebrate the victory against Porto during their Peace Cup semi-final soccer match at La Rosaleda stadium in Malaga, southern Spain July 31, 2009. REUTERS/Jon Nazca (SPAIN SPORT SOCCER) 

Aston Villa's Carlos Cuellar (L) challenges Middlesbrough's Tuncay Sanli during their English Premier League soccer match in Middlesbrough May 16, 2009. REUTERS/Nigel Roddis (BRITAIN SPORT SOCCER) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS 

Ukrainian heavyweight boxing world champion Vitali Klitschko addresses challenger Juan Carlos Gomez (R) of Cuba and Gomez' coach Orlando Cuellar during a news conference in Stuttgart February 2, 2009. Klitschko will defend his WBC title against Gomez in Stuttgart on March 21. REUTERS/Alex Grimm (GERMANY) 

Zilina's Dusan Pernis (L) clears the ball from Aston Villa's Carlos Cuellar during their UEFA Cup soccer match at Villa Park in Birmingham, central England, December 4, 2008. REUTERS/Darren Staples (BRITAIN) 

Aston Villa's Carlos Cuellar (R) and Fulham's Jimmy Bullard fight for the ball during their English Premier League soccer match at Villa Park in Birmingham, central England, November 29, 2008. REUTERS/Darren Staples (BRITAIN). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS. 

Aston Villa's players (L-R) Zat Knight, Steve Sidwell, Carlos Cuellar, Craig Gardner and Curtis Davies celebrate after scoring against Slavia Prague during their UEFA Cup soccer match in Prague November 6, 2008. REUTERS/David W Cerny (CZECH REPUBLIC) 

Aston Villa's Carlos Cuellar (R) challenges Newcastle United's Obafemi Martins during their English Premier League soccer match at St James' Park in Newcastle November 3, 2008. REUTERS/Nigel Roddis (BRITAIN). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS. 

Aston Villa's Carlos Cuellar (R) challenges Newcastle United's Obafemi Martins during their English Premier League soccer match at St James' Park in Newcastle November 3, 2008. REUTERS/Nigel Roddis (BRITAIN). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS. 

Aston Villa's Carlos Cuellar heads the ball against Chelsea during their English Premier League soccer match at Stamford Bridge in London October 5, 2008. REUTERS/Dylan Martinez (BRITAIN). FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. NO USE WITH UNAUTHORIZED AUDIO, VIDEO, DATA, FIXTURE LISTS, CLUB/LEAGUE LOGOS OR "LIVE" SERVICES. ONLINE IN-MATCH USE LIMITED TO 45 IMAGES, NO VIDEO EMULATION. NO USE IN BETTING, GAMES OR SINGLE CLUB/LEAGUE/PLAYER PUBLICATIONS. 

Chelsea's Franco Di Santo (R) challenges Aston Villa's Carlos Cuellar during their English Premier League soccer match at Stamford Bridge in London October 5, 2008. NO ONLINE/INTERNET USAGE WITHOUT A LICENCE FROM THE FOOTBALL DATA CO LTD. FOR LICENCE ENQUIRIES PLEASE TELEPHONE +44 (0) 207 864 9000. REUTERS/Dylan Martinez (BRITAIN) 

Rangers assistant coach Ally McCoist (L) consoles Carlos Cuellar after their UEFA Cup Final defeat to Zenit St. Petersburg at the City of Manchester stadium in Manchester, northern England, May 14, 2008. REUTERS/Phil Noble (BRITAIN) 

Rangers' Carlos Cuellar challenges Zenit St. Petersburg's Fatih Tekke (L) for the ball during their UEFA Cup Final soccer match at the City of Manchester stadium in Manchester, northern England, May 14, 2008. REUTERS/Phil Noble (BRITAIN) 

Rangers' Nacho Novo (L) and Carlos Cuellar stretch during a training session at the City of Manchester stadium in northern England, May 13, 2008. The Scottish side are set to play Russian team Zenit St. Petersburg in the UEFA Cup final on Wednesday. REUTERS/Nigel Roddis (BRITAIN) 

Rangers' Carlos Cuellar (L) celebrates Barry Ferguson's (on the ground, C) goal against Motherwell in their Scottish Premier League soccer match at Ibrox Park, Scotland, May 7, 2008. REUTERS/Russell Cheyne (BRITAIN) 

Fiorentina's Adrian Mutu (L) challenges Rangers' Carlos Cuellar during their UEFA Cup semi-final, first leg soccer match at Ibrox Stadium in Glasgow, Scotland, April 24, 2008. REUTERS//Russell Cheyne (BRITAIN) 

Fiorentina's Mario Alberto Santana (R) challenges Rangers' Carlos Cuellar and goalkeeper Neil Alexander during their UEFA Cup semi-final, first leg soccer match at Ibrox Stadium in Glasgow, Scotland, April 24, 2008. REUTERS//Russell Cheyne (BRITAIN) 

Fiorentina's Mario Alberto Santana (L) challenges Rangers' Carlos Cuellar and goalkeeper Neil Alexander during their UEFA Cup semi-final, first leg soccer match at Ibrox Stadium in Glasgow, Scotland, April 24, 2008. REUTERS/Russell Cheyne (BRITAIN) 

Fiorentina's Mario Alberto Santana (L) challenges Rangers' Carlos Cuellar and goalkeeper Neil Alexander during their UEFA Cup semi-final, first leg soccer match at Ibrox Stadium in Glasgow, Scotland, April 24, 2008. REUTERS/Russell Cheyne (BRITAIN) 

Fiorentina's Giampaolo Pazzini (R) fends off the challenge of Rangers' Carlos Cuellar during their UEFA Cup semi-final, first leg soccer match at Ibrox Stadium in Glasgow, Scotland April 24, 2008. REUTERS/David Moir (BRITAIN) 

Sporting Lisbon's' Liedson (L) watches the ball as Rangers' Carlos Cuellar challenges him during their UEFA Cup quarter final first leg soccer match at Ibrox stadium in Glasgow, Scotland April 3, 2008. REUTERS/David Moir (BRITAIN) 

Rangers' Carlos Cuellar (2) tackles Sporting Lisbon's Liedson during their UEFA Cup quarter-final first leg soccer match at Ibrox stadium in Glasgow, Scotland April 3, 2008. REUTERS/David Moir (BRITAIN) 

Rangers' Carlos Cuellar (L) challenges Celtic's Georgios Samaras during their Scottish Premier League soccer match at Ibrox stadium in Glasgow March 29, 2008. REUTERS/Russell Cheyne (BRITAIN) 

Rangers' Barry Ferguson (R) and Carlos Cuellar celebrate with team mates after their CIS Cup final soccer match against Dundee United at Hampden Park stadium in Glasgow, Scotland March 16, 2008. REUTERS/David Moir (BRITAIN) 

Rangers' Barry Ferguson (R) and Carlos Cuellar celebrate with team mates after their CIS Cup final soccer match against Dundee United at Hampden Park stadium in Glasgow, Scotland March 16, 2008. REUTERS/David Moir (BRITAIN) 

Rangers' Carlos Cuellar (2nd R) is challenged by Panathinaikos' Alexandros Tziolis during their UEFA Cup third round soccer match at Ibrox Stadium in Glasgow February 13, 2008. REUTERS/David Moir (BRITAIN) 

Rangers' Carlos Cuellar (R) takes the ball away from Hearts' Andrius Velicka during their CIS Insurance Cup semi-final soccer match at Hampden Park stadium in Glasgow, Scotland January 30, 2008. REUTERS/David Moir (BRITAIN) 

Rangers' Carlos Cuellar clashes in the air with Hibernian's Dean Shiels during their Scottish Premier League soccer match in Edinburgh, Scotland, December 29, 2007. REUTERS/David Moir (BRITAIN) 

Glasgow Rangers's Carlos Cuellar looks to VfB Stuttgart's celebrating players during their Champions League Group E soccer match in Stuttgart November 27, 2007. REUTERS/Thomas Bohlen (GERMANY) 

VfB Stuttgart's Cacau (R) challenges Glasgow Rangers's Cuellar Carlos during their Champions League Group E soccer match in Stuttgart November 27, 2007. REUTERS/Thomas Bohlen (GERMANY) 

Rangers's player Carlos Cuellar attends a news conference in Barcelona, November 6, 2007. Barcelona and Rangers will play their Champions League Group E soccer match next November 7. REUTERS/Albert Gea (SPAIN) 

Rangers' Barry Ferguson (L) laughs next to team mate Carlos Cuellar during a training session at their Murray Park training facility ahead of their Champions League soccer match on Tuesday against Barcelona at Ibrox stadium, in Glasgow, Scotland October 22, 2007. REUTERS/David Moir (BRITAIN) 

Rangers' Roy Carroll (2nd R) and Carlos Cuellar(R) jump on Barry Ferguson to celebrate after he scored against Celtic during their "Old Firm" Scottish Premier League soccer match at Ibrox Stadium in Glasgow, Scotland, October 20, 2007. REUTERS/David Moir (BRITAIN) 

Rangers' Carlos Cuellar tackles Hearts' Christian Nade (top) during their Scottish Premier League soccer match in Edinburgh, Scotland September 15, 2007. REUTERS/David Moir (BRITAIN). NO ONLINE/INTERNET USAGE WITHOUT A LICENCE FROM THE FOOTBALL DATA CO LTD. FOR LICENCE ENQUIRIES PLEASE TELEPHONE +44 (0) 207 864 9000. 

Rangers' Carlos Cuellar (R) and DaMarcus Beasley celebrate after their UEFA Champions League third qualifying round second leg soccer match against Red Star Belgrade in Belgrade August 28, 2007. REUTERS/Marko Djurica (SERBIA) 

Sevilla's Luis Fabiano (front) challenges Osasuna's Carlos Javier Cuellar during their UEFA Cup semi-final, second leg soccer match at the Ramon Sanchez Pizjuan stadium in Seville May 3, 2007. REUTERS/Javier Barbancho (SPAIN) 

Sevilla's Luis Fabiano (front) challenges Osasuna's Carlos Javier Cuellar during their UEFA Cup semi-final, second leg soccer match at the Ramon Sanchez Pizjuan stadium in Seville May 3, 2007. REUTERS/Javier Barbancho (SPAIN) 

Osasuna's Josetxu Romero (L) and Carlos Cuellar fight for the ball with Bayer Leverkusen's Sergej Barbarez (R) during their UEFA Cup quarter-final, second leg soccer match at Reyno de Navarra stadium in Pamplona, April 12, 2007. REUTERS/Vincent West (SPAIN) 

Sevilla's Ernesto Chevanton (L) battles for the ball with Osasuna's Carlos Cuellar during their Spanish First Division soccer match at Osasuna's Reyno de Navarra stadium April 1, 2007. REUTERS/Felix Ordonez (SPAIN) 

Atletico Madrid's Kun Aguero (L) fights for the ball with Osasuna's Carlos Javier Cuellar during their King's Cup soccer match at Atletico Madrid's Vicente Calderon stadium in Madrid January 9, 2007.REUTERS/Susana Vera (SPAIN) 

Juan Carlos Cuellar from Colombia's National Liberation Army (ELN) stands near someone wearing a typical Colombian hat before a meeting in Havana October 26, 2006. The Colombian government and the ELN have agreed to launch a formal peace process in order to end a four-decade-old war. REUTERS/Claudia Daut (CUBA) 

Juan Carlos Cuellar (from L-R), Antonio Garcia and Francisco Galan from Colombia's National Liberation Army (ELN) share a moment before a meeting in Havana October 26, 2006. The Colombian government and the ELN have agreed to launch a formal peace process in order to end a four-decade-old war. REUTERS/Claudia Daut (CUBA)