French President Emmanuel Macron (L), The Lord-Lieutenant of Greater London, Sir Kenneth Olisa (2nd L), Britain's Prince Charles, Prince of Wales (2nd R) and Britain's Camilla, Duchess of Cornwall (R) arrive to lay wreaths at the statue of former French president Charles de Gaulle at Carlton Gardens in central London on June 18, 2020 during a visit to mark the anniversary of former de Gaulle's appeal to French people to resist the Nazi occupation. - Macron visited London on June 18 to commemorate the 80th anniversary of former French president Charles de Gaulle's appeal to French people to resist the Nazi occupation during World War II, in London, Britain June 18, 2020. Tolga Akmen/Pool via REUTERS 

Michael Kenneth Wittstock, the father of Monaco's Princess Charlene, and members of the Cenestra Male Choir of South Africa lay flowers at a makeshift memorial to the victims of the truck attack along the Promenade des Anglais in Nice, France, July 21, 2016. REUTERS/Jean-Pierre Amet

Committee members of Demosisto (L-R) Agnes Chow, Joshua Wong, Kenneth Ip, Chairman Nathan Law and Oscar Lai pose in front of a backdrop during the launching ceremony of their new political party Demosisto in Hong Kong, China April 10, 2016. REUTERS/Bobby Yip TPX IMAGES OF THE DAY

Committee members of Demosisto (L-R) Joshua Wong, Kenneth Ip, Chairman Nathan Law and Oscar Lai chant slogans during the launching ceremony of their new political party Demosisto in Hong Kong, China April 10, 2016. REUTERS/Bobby Yip 

(L to R) Prime Minister of Saint Vincent and the Grenadines Ralph Gonsalves, Ortega's wife Rosario Murillo, Nicaragua's President Daniel Ortega, Venezuelan president's wife Cilia Flores, Venezuela's president Nicolas Maduro, Cuba's President Raul Castro, Uruguay's President Jose Mujica, wife of Mujica, Lucia Topolansky, Bolivia's President Evo Morales, Dominica's Prime Minister Roosevelt Skerrit, Ecuadorian Foreign Minister Ricardo Patino and Saint Lucia Prime Minister Kenneth Davis Anthony pose for a group photo after a wreath-laying ceremony at the mausoleum of 19th century Cuban independence hero Jose Marti in Santiago de Cuba July 26, 2013. Castro assured his people on Friday that a transfer of power to younger generations had begun, in a televised address marking the 60th anniversary of the start of the Cuban revolution. Castro spoke in the city of Santiago in eastern Cuba, where on July 26, 1953, the young Castro and a group of rebels, led by his brother Fidel, attacked the Moncada military barracks in a failed assault that sparked the movement that eventually toppled the U.S.-backed government of dictator Fulgencio Batista on Jan. 1, 1959. At the time of the attack, Raul Castro was 22 and Fidel Castro 27. REUTERS/Alejandro Ernesto/Pool (CUBA - Tags: POLITICS ANNIVERSARY) 

Cast member Gregory Itzin, depicting former Enron CEO Kenneth Lay, performs with puppets representing Enron board members during a dress rehearsal of the play "Enron" in New York April 7, 2010. The play opens in New York on April 27. Picture taken April 7, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Cast member Norbert Leo Butz (L), depicting former Enron president Jeffrey Skilling, and cast member Gregory Itzin, depicting former Enron CEO Kenneth Lay, perform during a dress rehearsal of the play "Enron" in New York April 7, 2010. The play opens in New York on April 27. Picture taken April 7, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT) 

Cast member Norbert Leo Butz (L), depicting former Enron president Jeffrey Skilling, and cast member Gregory Itzin, depicting former Enron CEO Kenneth Lay, perform during a dress rehearsal of the play "Enron" in New York April 7, 2010. The play opens in New York on April 27. Picture taken April 7, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT BUSINESS) 

Cast member Gregory Itzin, depicting former Enron CEO Kenneth Lay, performs during a dress rehearsal of the play "Enron" in New York April 7, 2010. The play opens in New York on April 27. Picture taken April 7, 2010. REUTERS/Lucas Jackson (UNITED STATES - Tags: ENTERTAINMENT BUSINESS IMAGES OF THE DAY) 

Enron founder Ken Lay talks to the media outside federal court after he was convicted on all charges in both his fraud and conspiracy and bank fraud trials in Houston May 25, 2006. REUTERS/Richard Carson 

Former Enron Chairman Ken Lay (C) and wife Linda along with attorney George "Mac" Secrest (L) leave Federal court after Lay's second day of testimony in the thirteenth week of the fraud and conspiracy trial of Lay and former CEO Jeff Skilling in Houston April 25, 2006. Enron was a victim of a media "witch hunt" that ultimately sent the financially strong energy giant on a path to bankruptcy, former Chairman and Chief Executive Kenneth Lay testified at his criminal trial on Tuesday. REUTERS/Tim Johnson 

Former Enron Chairman Ken Lay (L) and wife Linda leave Federal court after his second day on the witness stand in the thirteenth week of the fraud and conspiracy trial of Lay and former CEO Jeff Skilling in Houston April 25, 2006. Enron was a victim of a media "witch hunt" that ultimately sent the financially strong energy giant on a path to bankruptcy, former Chairman and Chief Executive Kenneth Lay testified at his criminal trial on Tuesday. REUTERS/Tim Johnson 

Former Enron Chairman Ken Lay leaves Federal court, after his second day on the witness stand in the thirteenth week of the fraud and conspiracy trial of Lay and former CEO Jeff Skilling, in Houston April 25, 2006. Enron was a victim of a media "witch hunt" that ultimately sent the financially strong energy giant on a path to bankruptcy, former Chairman and Chief Executive Kenneth Lay testified at his criminal trial on Tuesday. REUTERS/Richard Carson 

Former Enron Chairman Ken Lay leaves Federal court after his second day on the witness stand in the thirteenth week of the fraud and conspiracy trial of Lay and former CEO Jeff Skilling in Houston April 25, 2006. Enron was a victim of a media "witch hunt" that ultimately sent the financially strong energy giant on a path to bankruptcy, former Chairman and Chief Executive Kenneth Lay testified at his criminal trial on Tuesday. REUTERS/Richard Carson 

Former Enron Chairman and CEO Kenneth Lay and wife Linda cross a street, escorted by a policeman, to the federal courthouse in Houston April 25, 2006 to start his second day of testimony in his fraud and conspiracy trial. REUTERS/Tim Johnson 

Former Enron Chairman and CEO Kenneth Lay and his wife Linda arrive at the federal courthouse in Houston April 25, 2006 to start his second day of testimony in his fraud and conspiracy trial. REUTERS/Richard Carson 

Former Enron Chairman and CEO Kenneth Lay gestures in front of the media as he arrives at the federal courthouse in Houston with his wife Linda April 25, 2006 to start his second day of testimony in his fraud and conspiracy trial. REUTERS/Richard Carson 

Former Enron Chairman and CEO Kenneth Lay arrives at the federal courthouse in Houston, April 25, 2006 to start his second day of testimony in his fraud and conspiracy trial. REUTERS/Richard Carson 

Former Enron Chairman and CEO Kenneth Lay and his wife Linda arrive at the federal courthouse in Houston April 25, 2006 to start his second day of testimony in his fraud and conspiracy trial. REUTERS/Richard Carson 

Former Enron Chairman and CEO Kenneth Lay and wife Linda smile as they leave Federal court in Houston April 19, 2006. Former Enron Chief Executive Jeffrey Skilling faces 28 counts of conspiracy, fraud and insider trading, and Lay, faces six counts of conspiracy and fraud. REUTERS/Richard Carson 

Former Enron CEO Jeffrey Skilling leaves Federal court in Houston for lunch during his third day of cross-examination by prosecutors April 19, 2006. Skilling and Enron founder Kenneth Lay are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Former Enron Chief Executive Jeffrey Skilling (2L) and attorney Daniel Petrocelli (L) talk to reporters as former Enron Chairman and CEO Kenneth Lay (R) and his wife Linda leave Federal court in Houston April 19, 2006. REUTERS/Richard Carson 

Former Enron CEO Jeffrey Skilling (L) and attorney Daniel Petrocelli leave Federal court in Houston for lunch during his third day of cross-examination by prosecutors April 19, 2006. Skilling and Enron founder Kenneth Lay are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Enron founder Kenneth Lay leaves Federal court in Houston for lunch recess where co-defendent Jeffrey Skilling faces his third day of cross-examination by prosecutors April 19, 2006. Lay and former Enron CEO Skilling are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Enron founder Kenneth Lay (R) laughs with Houston Police officer Mac Moore as he escorts Lay from Federal court in Houston for lunch recess April 19, 2006. Lay and former Enron chief executive Jeffrey Skilling are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Former Enron CEO Jeffrey Skilling leaves Federal court in Houston for lunch during his third day of cross-examination by prosecutors April 19, 2006. Skilling and Enron founder Kenneth Lay are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Enron founder Kenneth Lay and wife Linda leave Federal court in Houston for the day April 18, 2006. Lay and former Enron CEO Jeffrey Skilling are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Enron founder Kenneth Lay and wife Linda leave Federal court in Houston for the day April 18, 2006. Lay and former Enron CEO Jeffrey Skilling are facing fraud and conspiracy charges in the downfall of the energy giant. REUTERS/Richard Carson 

Former Enron CEO and Chairman Kenneth Lay and his wife Linda speak to the media as they leave Federal court in Houston for lunch recess April 18, 2006. Lay faces six charges of conspiracy and fraud. REUTERS/Richard Carson 

Former Enron CEO and Chairman Kenneth Lay gestures as he leaves Federal court in Houston for lunch recess April 18, 2006. Lay faces six charges of conspiracy and fraud. REUTERS/Richard Carson 

Enron founder Ken Lay is filmed on camera as he waits to cross the street on his way to the Federal court in Houston April 13, 2006. REUTERS/Richard Carson 

Enron founder Kenneth Lay returns to the federal court after a lunch break in Houston, Texas, April 12, 2006. REUTERS/Richard Carson 

Enron founder Kenneth Lay (L) and his wife Linda leave for a lunch break from the federal court in Houston, Texas, April 12, 2006. REUTERS/Richard Carson 

Enron founder Kenneth Lay (C) and his wife Linda (R) leave for a lunch break from the federal court in Houston, Texas, April 12, 2006. REUTERS/Richard Carson 

Former Enron founder and CEO Kenneth Lay and wife Linda leave the federal courthouse in Houston April 11, 2006. Former Enron CEO Jeff Skilling on Tuesday told the jury at his criminal trial he never ordered subordinates at the energy company to illegally falsify profits to please Wall Street. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay, his wife Linda, and daughter Robyn (R) leave the federal courthouse in Houston after former CEO Jeff Skilling's second day of testimony, April 11, 2006. Skilling on Tuesday told the jury at his criminal trial he never ordered subordinates at the energy company to illegally falsify profits to please Wall Street. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay returns to the federal courthouse in Houston after a lunch break, April 11, 2006. Former Enron CEO Jeffrey Skilling on Tuesday told the jury at his criminal trial he never ordered subordinates at the energy company to illegally falsify profits to please Wall Street. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay and his wife Linda return to the federal courthouse in Houston after a lunch break, April 11, 2006. Former Enron CEO Jeffrey Skilling on Tuesday told the jury at his criminal trial he never ordered subordinates at the energy company to illegally falsify profits to please Wall Street. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay and his wife Linda return to the federal courthouse in Houston after a lunch break, April 11, 2006. Former Enron CEO Jeffrey Skilling on Tuesday told the jury at his criminal trial he never ordered subordinates at the energy company to illegally falsify profits to please Wall Street. REUTERS/Tim Johnson 

Former Enron founder Kenneth Lay and his wife Linda leave the federal courthouse for a lunch break in Houston, Texas April 3, 2006. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling's attorney, Daniel Petrocelli, talks to the media outside of the federal courthouse in Houston, April 3, 2006 after a lunch break in the fraud and conspiracy trial of former Enron executives Kenneth Lay and Jeffrey Skilling. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling (L) and his attorney Daniel Petrocelli arrive back at the federal courthouse in Houston, April 3, 2006 after a lunch break in the fraud and conspiracy trial of former Enron executives Kenneth Lay and Jeffrey Skilling. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay leaves the federal courthouse in Houston, April 3, 2006 with wife Linda, hand in hand, during a lunch break in the fraud and conspiracy trial of former Enron executive Jeffrey Skilling and Lay himself. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay leaves the federal courthouse in Houston, April 3, 2006, with wife Linda, during a lunch break in the fraud and conspiracy trial of former Enron executive Jeffrey Skilling and Lay himself. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay leaves the federal courthouse in Houston, April 3, 2006 with wife Linda for a lunch break in the fraud and conspiracy trial of former Enron executive Jeffrey Skilling and Lay himself. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling (L) and his attorney Daniel Petrocelli leave the federal courthouse in Houston, April 3, 2006, for a lunch break, during the fraud and conspiracy trial of former Enron executives Kenneth Lay and Jeffrey Skilling. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling (L) and his attorney Daniel Petrocelli leave the federal courthouse in Houston, April 3, 2006, for a lunch break while chatting with the media, during the fraud and conspiracy trial of former Enron executives Kenneth Lay and Jeffrey Skilling. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling and his attorney, Daniel Petrocelli, (R) leave the federal courthouse in Houston, April 3, 2006 for a lunch break, in the fraud and conspiracy trial of former Enron executives Kenneth Lay and Jeffrey Skilling. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling (L) and his attorney Daniel Petrocelli leave the federal courthouse in Houston, April 3, 2006 for a lunch break, in the fraud and conspiracy trial of former Enron executives Kenneth Lay and Jeffrey Skilling. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay acknowledges the sign held by Lee Perry as he arrives at the federal courthouse in Houston, April 3, 2006 to start the defense portion in the fraud and conspiracy trial of former Enron executive Jeffrey Skilling and Lay. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay arrives at the federal courthouse in Houston, April 3, 2006 to start the defense portion in the fraud and conspiracy trial of former Enron executive Jeffrey Skilling and Lay. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay arrives at the federal courthouse in Houston, April 3, 2006 to start the defense portion in the fraud and conspiracy trial of former Enron executive Jeffrey Skilling and Lay. REUTERS/Tim Johnson 

Former Enron CEO Jeffrey Skilling (L) and his attorney Daniel Petrocelli (R) arrive at the federal courthouse in Houston April 3, 2006 to start the defense in the fraud and conspiracy trial of former Enron executives Kenneth Lay and Skilling. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay and his wife Linda leave the federal court in Houston March 28, 2006, after the prosecution rested its case against Lay and former Enron CEO Jeff Skilling. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay (L) greet the media with his attorney Mike Ramsey outside the federal court in Houston March 28, 2006, after the prosecution rested its case against Lay and former Enron CEO Jeff Skilling. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay greets the media outside the federal court in Houston March 28, 2006, after the prosecution rested its case against Lay and former Enron CEO Jeff Skilling. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay (L) greets the media with his attorney Mike Ramsey outside the federal court in Houston March 28, 2006, after the prosecution rested its case against Lay and former Enron CEO Jeff Skilling. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson 

Former Enron founder and CEO Kenneth Lay smiles outside federal court in Houston March 28, 2006, after the prosecution rested its case against Lay and former Enron CEO Jeff Skilling. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson 

Former Enron CEO Jeff Skilling (R) and his attorney Daniel Petrocelli (2R) greet the media at federal court in Houston March 28, 2006, after the prosecution rested its case against Skilling and former Enron founder, CEO Kenneth Lay. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson 

Former Enron CEO Jeff Skilling (C) and his attorney Daniel Petrocelli (L) greet the media at federal court in Houston March 28, 2006, after the prosecution rested its case against Skilling and former Enron founder, CEO Kenneth Lay. The defense team will resume the trial on April 3, 2006. REUTERS/Tim Johnson