What the Romans said. (Nicola Marfisi/AGF/Universal Images Group via Getty Images)

As the first 250 days of Russia’s war in Ukraine have proved again, the logic of strategy is paradoxical. It has never been linear, as in the Roman Si vis pacem para bellum: if you want peace prepare for war. Because the logic of strategy is paradoxical, it is very easy to be wrong in matters of peace and war, and very hard to be right.
That was the first lesson of the war: Putin collided head-on with the paradoxical logic of strategy. Military alliances need a shared enemy. Once the Cold War ended, Nato became weaker and weaker, because diverse interests — including the desire to spend less — naturally arose once there was no enemy to threaten all. Nato became so weak that in Europe there was talk of a military alliance without the US. Only irrelevant Leftists said this straight out, but many mainstream politicians across Europe kept hinting that the time had come for Nato to be replaced by a European Union alliance.
By February 2022, Nato was evidently no longer strong enough to deter Russia, so Russia attacked Ukraine. Because Russia attacked Ukraine, Nato suddenly had a threatening enemy, and the alliance quickly became strong once more. Many Nato countries sent military aid to Ukraine rapidly, which was essential materially, and very encouraging morally. Some of it was for show, but much was useful and some was just smart. Norway, for example, immediately sent 5,000 LAW hand-launched anti-tank rockets. Old, cheap and limited in range but the perfect weapons for the first days of this war, because anybody could use them even without training. Just point and shoot at an armoured vehicle.
Not only did Nato wake up, but it also grew. Within days of the invasion, the alliance started expanding. Australia, not a Nato member but an official “partner”, sent military aid (including Bushmaster armoured cars by airlift over 19,600 kilometres). Japan, not a Nato member, sent important financial aid. Even before they applied for Nato membership, Sweden and Finland also sent military aid.
The second lesson of the war concerned the silent role of seapower. In April, the sinking of the Russian flagship Moskva 80 nautical miles south of Odessa attracted much attention. Videos of the burning ship were everywhere. But there are no videos of aero-naval battles in the North Atlantic: even though Russia has effective attack submarines, both nuclear-powered and diesel-electric in Atlantic waters, the US and Canada have been able to support Ukraine by shipping aid entirely unmolested. Because Russian naval forces are totally deterred, Western Europe has its safe material and strategic depth in the Atlantic.
The third lesson of the war was a demonstration of the levels of strategy. Strategy operates at different levels: the tactical level, the operational level, the theatre-of-war-level, and finally, the level of Grand Strategy. It is possible to lose a war at any of those levels, but to be successful it is necessary to be at least adequate at each and every one.
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