Ukraine says major Russian oil refinery and airfield hit, as Moscow reports eight deaths

The ukraine update

Russia's military says it attacked Ukraine's ports and vessels in the Black Sea overnight

Why ukraine matters

This development in ukraine, major, russian, oil, refinery matters because it alters the baseline assumptions that BBC and others have been working from.

What led here

Earlier reporting from BBC and comparable outlets sketched the conditions that would eventually produce an event like this.

Where this fits in Signal Ledger

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The editorial angle

Signal Ledger reads this through the lens of ukraine, major, russian, oil, refinery: Russia's military says it attacked Ukraine's ports and vessels in the Black Sea overnight.