Burning through ammo, Russia using 40-year-old rounds, U.S. official says
Russia is turning to decades-old ammunition with high failure rates as it burns through its stockpiles to carry out its nearly 10-month-old invasion of Ukraine, a senior U.S. military official said on Monday.
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### Instruction: Burning through ammo, Russia using 40-year-old rounds, U.S. official says

### Response: Russia is turning to decades-old ammunition with high failure rates as it burns through its stockpiles to carry out its nearly 10-month-old invasion of Ukraine, a senior U.S. military official said on Monday.