The US says Russia might be planning a "false flag" operation to lay the groundwork for such an attack.
The United States is providing Ukraine with supplies and equipment in case Russia deploys chemical or biological weapons, the White House said on Friday, underscoring that this would not compromise domestic preparedness in any form.
White House press secretary Jen Psaki said the supplies were being provided given a warning by the United States and other countries about the possibility that Russia could deploy such weapons in Ukraine and might be planning a "false flag" operation to lay the groundwork for such an attack.
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