If Europe wants to deter possible Russian aggression, it has to do a much better job of moving tanks, troops and ammunition across the continent, a top French general told POLITICO.

During the Cold War, countries were used to moving military gear around, a task that was “very simple” back then but “has gradually become extremely complex,” said General Bertrand Toujouse, in charge of the French army’s newly created land command for Europe.

“It’s absolutely essential to put military mobility back into European minds, and for this we need to practice,” he added, speaking from his office in Lille.