the U.S. hopes to increase it to 50,000 rounds by next year
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Best to add a zero to that number - as it stands that is only 600,000 rounds a year, not adequate for wars of attrition.
P.S. Keep an eye on reporting from Washington Post, Wall Street Journal and CNN for “official disinformation” from the US on the upcoming Ukrainian offensives. They provided critical disinformation last year prior to and during the Kherson and Kharkiv offensives that helped keep Russia and Russia sympathizers off balance and distracted.