Chris Patten and Sir Tony Blair depart the annual Order of the Garter Service at St George's Chapel, Windsor Castle, Berkshire, Britain June 19, 2023. Yui Mok/Pool via REUTERS 

Former Prime Minister Sir Tony Blair and Cherie Blair leave during the Order Of The Garter Service at Windsor Castle on June 19, 2023 in Windsor, England. John Phillips/Pool via REUTERS 

Former Prime Minister Sir Tony Blair (C) and Cherie Blair leaving during the Order Of The Garter Service at Windsor Castle on June 19, 2023 in Windsor, England. John Phillips/Pool via REUTERS 

Sir Tony Blair and wife Cherie depart the annual Order of the Garter Service at St George's Chapel, Windsor Castle, Berkshire, June 19, 2023.Yui Mok/Pool via REUTERS 

WINDSOR, ENGLAND - JUNE 19: Former Prime Minister, Sir Tony Blair arrives at the Order Of The Garter Service at Windsor Castle on June 19, 2023 in Windsor, England. The Order of the Garter is the oldest and most senior Order of Chivalry in Britain. Chris Jackson/Pool via REUTERS 

WINDSOR, ENGLAND - JUNE 19: Former Prime Minister Tony Blair walking in the procession to St George's Chapel for the Order Of The Garter Service at Windsor Castle on June 19, 2023 in Windsor, England. The Order of the Garter is the oldest and most senior Order of Chivalry in Britain. John Phillips/Pool via REUTERS 

Former Prime Minister Sir Tony Blair leaves the Order Of The Garter Service at Windsor Castle on June 19, 2023 in Windsor, England. John Phillips/Pool via REUTERS 

British former Prime Minister Tony Blair arrives at St George's Chapel to attend the Most Noble Order of the Garter Ceremony in Windsor Castle in Windsor, on June 19, 2023. The Order of the Garter is the oldest and most senior Order of Chivalry in Britain, established by King Edward III nearly 700 years ago. HENRY NICHOLLS/Pool via REUTERS 

WINDSOR, ENGLAND - JUNE 19: Former Prime Minister Tony Blair (C) is seen arriving at the Order Of The Garter Service at Windsor Castle on June 19, 2023 in Windsor, England. The Order of the Garter is the oldest and most senior Order of Chivalry in Britain. John Phillips/Pool via REUTERS 

Former British Prime Minister Tony Blair arrive for the Order of the Garter service at Windsor Castle, in Windsor, England, Monday, June 19, 2023. The Order of the Garter is the oldest and most senior Order of Chivalry in Britain, established by King Edward III nearly 700 years ago. Kirsty Wigglesworth/Pool via REUTERS 

Former British Prime Minister Tony Blair and Lady Mary Elizabeth Peters attend the annual Order of the Garter Service at St George's Chapel, Windsor Castle, Windsor, Britain. Picture date: Monday June 19, 2023. Yui Mok/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie as they arrive at Westminster Abbey, central London, ahead of the coronation ceremony of King Charles III and Queen Camilla. Picture date: Saturday May 6, 2023. Andrew Milligan/Pool via REUTERS 

Former prime minister Tony Blair (top, right) and his wife Cherie Blair with former prime minister John Major (bottom, right) leave Westminster Abbey in central London, following King Charles III's coronation ceremony. Picture date: Saturday May 6, 2023. Ben Birchall/Pool via REUTERS 

Former prime minister Tony Blair (top, right) and his wife Cherie Blair with former prime minister John Major (bottom, right) leave Westminster Abbey in central London, following King Charles III's coronation ceremony. Picture date: Saturday May 6, 2023. Ben Birchall/Pool via REUTERS 

Former prime minister Tony Blair with his wife Cherie Blair attends Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. Mark Large/Pool via REUTERS 

Former prime minister Tony Blair with his wife Cherie Blair attends Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. Mark Large/Pool via REUTERS 

Former prime minister Tony Blair with his wife Cherie Blair attends Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. Mark Large/Pool via REUTERS 

Former prime minister Tony Blair with his wife Cherie Blair at the coronation ceremony of King Charles III and Queen Camilla in Westminster Abbey, London. Picture date: Saturday May 6, 2023. Aaron Chown/Pool via REUTERS 

Coronation of King Charles III 6th May 2023 King Charles III pictured arriving with Camila the Queen Consort for the coronation service at Westminster Abbey. Tony and Cherie Blair Pictures by Dan Charity 06-05-23 Dan Charity/Pool via REUTERS 

Britain's leader of the Labour Party Keir Starmer and Cherie Blair, wife of former British Prime Minister Tony Blair, talk outside Westminster Abbey following Britain's King Charles' coronation ceremony, in London, Britain May 6, 2023. REUTERS/Dylan Martinez 

Britain's leader of the Labour Party Keir Starmer, former Prime Minister Tony Blair and his wife Cherie Blair talk outside Westminster Abbey following Britain's King Charles' coronation ceremony, in London, Britain May 6, 2023. REUTERS/Dylan Martinez 

Britain's leader of the Labour Party Keir Starmer and former Prime Minister Tony Blair stand outside Westminster Abbey following Britain's King Charles' coronation ceremony, in London, Britain May 6, 2023. REUTERS/Dylan Martinez 

Former prime ministers John Major and Tony Blair arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony in Westminster Abbey, in London, Britain May 6, 2023. HUMPHREY NEMAR/Pool via REUTERS 

Former British Prime Minister Tony Blair leaves Westminster Abbey following the coronation ceremony of Britain's King Charles and Queen Camilla, in London, Britain May 6, 2023. REUTERS/Toby Melville/Pool 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony in Westminster Abbey, in London, Britain May 6, 2023. DAVID LEVENE/Pool via REUTERS 

Former British Prime Minister Tony Blair and his wife Cherie Blair depart Westminster Abbey, following Britain's King Charles and Queen Camilla's coronation ceremony, in London, Britain May 6, 2023. REUTERS/Henry Nicholls 

Former Prime Ministers John Major and Tony Blair look on following Britain's King Charles coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. REUTERS/Phil Noble/Pool 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony in Westminster Abbey, in London, Britain May 6, 2023. DAVID LEVENE/Pool via REUTERS 

Former British Prime Minister David Cameron and his wife Samantha Cameron greet Cherie Blair, wife of former British Prime Minister Tony Blair, outside Westminster Abbey ahead of Britain's King Charles' coronation ceremony, in London, Britain May 6, 2023. REUTERS/Dylan Martinez 

Former prime minister Boris Johnson and his wife Carrie Johnson along with John Major and Tony Blair with his wife Cherie Blair attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. MARK LARGE/Pool via REUTERS 

Former prime minister Boris Johnson and his wife Carrie Johnson along with John Major and Tony Blair with his wife Cherie Blair attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. MARK LARGE/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair followed by Gordon Brown and his wife Sarah Brown arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. DAN CHARITY/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair followed by Gordon Brown and his wife Sarah Brown arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. DAN CHARITY/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair followed by Gordon Brown and his wife Sarah Brown arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. DAN CHARITY/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair followed by Gordon Brown and his wife Sarah Brown arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. DAN CHARITY/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie Blair arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. DAN CHARITY/Pool via REUTERS 

Former British Prime Ministers Gordon Brown, Tony Blair and David Cameron arrive to attend Britain's King Charles and Queen Camilla coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. REUTERS/Henry Nicholls 

Former prime ministers John Major and Tony Blair with his wife Cherie as they arrive at Westminster Abbey, central London, ahead of the coronation ceremony of King Charles III and Queen Camilla. May 6, 2023. Andrew Milligan/Pool via REUTERS 

Former prime ministers Sir Tony Blair, Gordon Brown, David Cameron, Theresa may, Boris Johnson and Liz Truss with their partners at the coronation of King Charles III and Queen Camilla at Westminster Abbey, London. Saturday May 6, 2023. Andrew Matthews/Pool via REUTERS 

Cherie Blair and Sir Tony Blair at the coronation of King Charles III and Queen Camilla at Westminster Abbey, London. Saturday May 6, 2023. Andrew Matthews/Pool via REUTERS 

Former prime ministers John Major and Tony Blair with his wife Cherie as they arrive at Westminster Abbey, central London, ahead of the coronation ceremony of King Charles III and Queen Camilla. May 6, 2023. Andrew Milligan/Pool via REUTERS 

Former Prime Minister Tony Blair and his wife Cherie Blair attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. REUTERS/Phil Noble/Pool 

Former Prime Minister Tony Blair and his wife Cherie Blair attend Britain's King Charles and Queen Camilla's coronation ceremony at Westminster Abbey, in London, Britain May 6, 2023. REUTERS/Phil Noble/Pool 

Former British Prime Minister Tony Blair and his wife Cherie Blair arrive to attend Britain's King Charles and Queen Camilla's coronation ceremony in Westminster Abbey, in London, Britain May 6, 2023. Dan Charity/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair speaks at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, former US Senator George Mitchell, former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, Former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, Former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, former US Senator George Mitchell, former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, former US Senator George Mitchell, former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, Former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former Taoiseach Bertie Ahern, British Prime Minister Rishi Sunak, Former US president Bill Clinton, and former British Prime Minister Sir Tony Blair stand together at Hillsborough Castle for the Gala dinner to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former British Prime Minister Sir Tony Blair greets Northern Ireland Secretary Chris Heaton-Harris during the International conference to mark the 25th anniversary of the Good Friday Agreement, in Belfast, Northern Ireland, April 19, 2023. Charles McQuillan/Pool via REUTERS 

Former U.S. Senator George Mitchell, U.S. Ambassador to Ireland Claire Cronin and former British Prime Minister Sir Tony Blair attend a banquet at Belfast City Hall, as part of the events of a three-day international conference at Queen's University Belfast to mark the 25th anniversary of the Belfast/Good Friday Agreement, in Belfast, Northern Ireland, April 17, 2023. Niall Carson/Pool via REUTERS