Russia does military exercises regularly, but this year’s version, underway right now, deserves especially close attention. It’s called Zapad (“West”) and involves thousands of troops doing maneuvers on the borders of the Baltic states and Poland. The motivating scenario is to defend against an imagined invasion of Belarus by foreign-backed extremists. One of the fictional enemy states, “Vesbaria,” seems to be a thinly disguised Lithuania; the other, “Lubenia,” looks a bit like Poland. There will no doubt be the usual low-level provocations, with Russian planes buzzing borders, that will make the whole passive-aggressive show of strength look more like an invasion of the West than the other way around.

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