A history you need to know about.
Every one of these crises could have resulted in a global conflagration. Earlier crises (such as the Berlin Blockade of 1948 or the Korean attack of 1950) could have led to war, but they took place before the superpowers developed huge stockpiles of nuclear-armed intercontinental missiles. Each crisis was eventually resolved in favor of peace, but in every case both sides relied on gambles, and survived as much by luck as by strategy. At some point, luck runs out. We can only hope, over 30 years after the last Cold War crisis, that Vladimir Putin and his subordinates in the Kremlin are done gambling with international peace.
An international “crisis” is the anxious space between peace and war. It is defined by three things: time, threat, and the likelihood of violence. The shorter the time, the greater the sense of threat to important interests, and the greater the chance of physical harm, the more intense the crisis. By definition, it cannot go on indefinitely: like the analogous medical term, it’s the point at which things must get better or worse. The July crisis of 1914 lasted only weeks, for example, but plunged the Great Powers into their first global war.
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During the Cold War, “crisis” had a special connotation, because each moment of political conflict raised the possibility of nuclear war between the United States and the Soviet Union. Every confrontation carried the potential not only for war, but for the extermination of human civilization. While we look back on these periods now as something like curios in a museum, they were moments of existential fear for both American and Soviet leaders.