In 2022, we celebrate 70 years of NATO Review (formerly NATO Letter). Over the past seven decades, NATO Review has been offering expert opinion and analysis on a wide range of Euro-Atlantic security issues in articles that have sometimes been reflective, sometimes predictive, but always at the front line of debate. To commemorate this long legacy, over the course of 2022 we will be re-publishing a selection of NATO Review articles from throughout the history of the magazine. This article, written in 1976 by then-Secretary General Joseph Luns, may evoke the old adage that the more things change, the more they stay the same. The 1970s saw a period of détente, or the easing of tensions, between the “West” (NATO) and the “East” (the Warsaw Pact, led by the Soviet Union). Despite warming relations and plenty of good-faith diplomacy, there were still concerns that the Soviet Union would continue its attempts to expand its sphere of influence through unpredictable actions, ideological conflict and even open hostility. NATO Allies maintained a collective hope of ending enmity and finding common ground with Russia. But they also recognised that stability and security come from strength, and stood firmly behind their prime responsibility: to ensure collective defence for each other, including by deterring aggression from a belligerent neighbour. In 1976, the strategic conflict was between NATO and the Warsaw Pact. However, since the end of the Cold War, eleven countries of the former communist bloc have joined NATO. These Allies exercised their sovereign right to choose their own path and shape their own future – a right which must be respected. NATO’s Open Door policy has helped spread freedom, democracy and prosperity across Europe. It has never been directed against Russia or any other country. The door continues to remain open to any European country in a position to undertake the commitments and obligations of membership, and contribute to security in the Euro-Atlantic area.