New York Times:

For more than a year, Ukrainian air defenses, reinforced by Western weaponry, have kept Russian planes at bay.

But without a huge influx of munitions, Ukraine’s entire air defense network, weakened by repeated barrages from Russian drones and missiles, could fracture, according to U.S. officials and newly leaked Pentagon documents, potentially allowing President Vladimir V. Putin of Russia to unleash his lethal fighter jets in ways that could change the course of the war.

In the early days of the invasion, Russian aircraft flew hundreds of combat flights to bomb targets in Ukraine. But a combination of quick thinking by Ukrainian commanders and poor intelligence and bad aim by Russian pilots left many of Ukraine’s warplanes and air defenses intact, preventing Moscow from gaining control of the skies above the battlefield and forcing Russia to keep much of its air force out of the fight.

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