It was 2008, on the eve of the Bucharest Summit, the place the North Atlantic Treaty Group thought of increasing by inviting new members from the Balkans and the previous Soviet Union. André Glucksmann and I co-signed an open letter to the French president and the German chancellor urging them to listen to the pleas of Ukraine, which had sought to guard itself from the Russian empire because it declared independence in 1918.

Seventeen years after its second emancipation in 1991, leaders in Kyiv noticed no different path than this one: the Membership Motion Plan, which might enable their nation in the future to hitch NATO.