CNN
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Every year, the spring rain clouds over Moscow are carefully seeded with powerful chemicals to ensure clear skies for the annual May 9 Victory Day parade, Russia’s most important show of national pride.
This year, the threat from above comes not from rain showers, but squadrons of potentially lethal Ukrainian drones.
Already, in the days running up to this year’s parade on Red Square, multiple drone strikes have forced airspace closures at all four Moscow airports and heightened anxiety across the Russian capital.
Elsewhere, in distant Russian-annexed Crimea, local Victory Day parades have already been cancelled due to acute security…