NATO celebrates its 75th anniversary “in a paradoxical state”, between revitalization and multiple challenges. Guillaume Lasconjarias, military historian and associate professor at Paris 1 Panthéon-Sorbonne University.

NATO has never been so rejuvenated and revitalized, but at the same time it has been going through almost existential crises for more than a decade. The Alliance has not resolved several major challenges, such as the lack of convergence of interests between the countries which compose it.