"Are we waving in celebration or do people think we are drowning?" That's what one senior European diplomat asked as the military alliance prepared to mark its 70th anniversary in London today. With members squabbling over cash and a failure to cooperate, NATO is facing a precarious political future. French President Emmanuel Macron even called it "brain dead" last month after Washington's troop withdrawal from Syria paved the way for a unilateral Turkish offensive.
What's on the agenda? When officials meet at Buckingham Palace, they'll discuss the military threat from China and consider space as a new arena of warfare.