NATO leaders on Tuesday will meet in London to mark the alliance’s 70th anniversary.

Queen Elizabeth will host the heads of state and government at Buckingham Palace for a reception and celebrate the alliance’s 70th anniversary.

The leaders then will be hosted by U.K. Prime Minister Boris Johnson at 10 Downing Street over a dinner.

The leaders of NATO’s 29 member states including Turkish President Recep Tayyip Erdogan, U.S. President Donald Trump, U.K. Prime Minister Boris Johnson, German Chancellor Angela Merkel, French President Emmanuel Macron, and Canadian Prime Minister Justin Trudeau are attending the summit.

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