NATO leaders gather as infighting roils military alliance

Leaders of the NATO alliance countries, and its secretary general, join Britain's Queen Elizabeth II and Prince Charles the Prince of Wales, for a gro... Leaders of the NATO alliance countries, and its secretary general, join Britain's Queen Elizabeth II and Prince Charles the Prince of Wales, for a group picture during a reception at Buckingham Palace in London, Tuesday Dec. 3, 2019, as they gathered to mark 70-years of the alliance. Back row, from left: Xavier Bettel Prime Minister of Luxembourg; Egils Levits President of Latvia; Gitanas Nauseda President of Lithuania; Dusko Markovic Prime Minister of Montenegro; Erna Solberg Prime Minister of Norway; Mark Rutte Prime Minister of Netherlands; Zuzana Caputova President of Slovakia; Andrzej Duda President of Poland; Antonio Costa Prime Minister of Portugal; Klaus Iohannis President of Romania; Marjan Sarec Prime Minister of Slovenia. Middle row from left: Edi Rama Prime Minister of Albania; Zoran Zaev Prime Minister of North Macedonia; Mette Frederiksen Prime Minister of Denmark; Juri Ratas Prime Minister of Estonia; Emmanuel Macron President of France; Angela Merkel President of Germany; Kyriakos Mitsotakis Prime Minister of Greece; Viktor Orban Prime Minister of Hungary; Katrin Jakobsdottir Prime Minister of Iceland; Giuseppe Conte Prime Minister of Italy; Andrej Plenkovic Prime Minister of Croatia. Seated from left: Sophie Wilmas Prime Minister of Belgium; Rumen Radev President of Bulgaria; Donald Trump President of United States; Prince Charles The Prince of Wales; Jens Stoltenberg NATO Secretary General; Queen Elizabeth II; Boris Johnson Prime Minister of the United Kingdom; Justin Trudeau Prime Minister of Canada; Pedro Sanchez Acting Prime Minister of Spain; Recep Tayyip Erdogan President of Turkey; Milos Zeman President of the Czech Republic. (Yui Mok/Pool via AP)

President Donald Trump listens as French President Emmanuel Macron speaks during a meeting at Winfield House during the NATO summit, Tuesday, Dec. 3, ... President Donald Trump listens as French President Emmanuel Macron speaks during a meeting at Winfield House during the NATO summit, Tuesday, Dec. 3, 2019, in London. (AP Photo/ Evan Vucci)

A supporter of President Donald Trump waves the U.S. flag outside Buckingham Palace in London, Tuesday, Dec. 3, 2019. Trump and his NATO counterparts ... A supporter of President Donald Trump waves the U.S. flag outside Buckingham Palace in London, Tuesday, Dec. 3, 2019. Trump and his NATO counterparts were gathering in London Tuesday to mark the alliance's 70th birthday amid deep tensions as spats between leaders expose a lack of unity that risks undermining military organization's credibility. (AP Photo/Alberto Pezzali)

U.S. President Donald Trump leaves 10 Downing Street in London after attending a NATO reception hosted by British Prime Minister Boris Johnson, Tuesda... U.S. President Donald Trump leaves 10 Downing Street in London after attending a NATO reception hosted by British Prime Minister Boris Johnson, Tuesday, Dec. 3, 2019. U.S. President Donald Trump and his NATO counterparts were gathering in London Tuesday to mark the alliance's 70th birthday amid deep tensions as spats between leaders expose a lack of unity that risks undermining military organization's credibility. (AP Photo/Alastair Grant, Pool)

Britain's Queen Elizabeth II, centre, takes her seat with Britain's Prime Minister Boris Johnson and Chancellor of Germany Angela Merkel, behind, befo... Britain's Queen Elizabeth II, centre, takes her seat with Britain's Prime Minister Boris Johnson and Chancellor of Germany Angela Merkel, behind, before a formal group photo during a formal reception for the heads of the NATO countries, at Buckingham palace in London Tuesday Dec. 3, 2019. Leaders from across the 29-member trans-Atlantic alliance are gathered in London to mark the 70th anniversary of NATO. (Yui Mok/Pool via AP)

Canadian Prime Minister Justin Trudeau leaves 10 Downing Street in London after attending a NATO reception hosted by British Prime Minister Boris John... Canadian Prime Minister Justin Trudeau leaves 10 Downing Street in London after attending a NATO reception hosted by British Prime Minister Boris Johnson, Tuesday, Dec. 3, 2019. U.S. President Donald Trump and his NATO counterparts were gathering in London Tuesday to mark the alliance's 70th birthday amid deep tensions as spats between leaders expose a lack of unity that risks undermining military organization's credibility. (AP Photo/Alastair Grant, Pool)

Prime Minister of Spain Pedro Sánchez is greeted by Deputy Master of The Household Lt Col Anthony Charles Richards as he arrives ahead of the formal r... Prime Minister of Spain Pedro Sánchez is greeted by Deputy Master of The Household Lt Col Anthony Charles Richards as he arrives ahead of the formal reception for the heads of NATO countries, at Buckingham palace in London Tuesday Dec. 3, 2019. Leaders from across the 29-member trans-Atlantic alliance are gathered in London to mark the 70th anniversary of NATO. (Dan Kitwood/Pool via AP)