Ukraine’s drone attack on Russia could bring about a wide array of reactions. Here are the key takeaways.

Smoke rises above the area following what local authorities called a drone attack on a military unit in the Sredny settlement, in the Irkutsk region of Russia, on June 1, 2025. Governor of Irkutsk Region Igor Kobzev via Telegram/Handout via Reuters
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Ukraine’s surprise June 1 drone attack on Russia’s strategic bomber fleet has crippled a significant portion of Russia’s nuclear strike capability.
It has also become the latest obstacle in U.S. President Donald Trump’s path to resolving the three-year war.