France, March 15 -- United States President Donald Trump's U-turns have driven Nato to an existential crisis. Between doubts over the continuation of American involvement and pressure for European autonomy, the future of the organisation, key for transatlantic security, has never seemed so uncertain.

An article on the home page of the North Atlantic Treaty Organisation (Nato) is illustrated with an image of the Ukrainian flag alongside the Nato flag - the blue and yellow side by side with the compass rose on its blue background, representing the Atlantic Ocean and the direction towards peace.

"Nato condemns Russia's war against Ukraine in the strongest terms. The Alliance remains steadfast in its support for Ukraine, helping to uphold i...