NATO is in a direct proxy war with Russia, who has repeatedly said that they consider this war an "existential threat". The 1962 crisis was resolved when the Soviet Union eventually stood down and agreed not to stage their troops and missiles in Cuba. NATO has insisted it has every right to stage their troops and missiles in Ukraine. Reasonable people can disagree about whether or not we are actually closer to the precipice than we were in 1962, but nobody who understands the situation thinks a serious argument can't be made. We are at the point right now where nuclear war can break out at any moment.