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- Ukraine counteroffensive could have only 30 days before autumn weather starts, says US military's top general.
- The counteroffensive has been "long, slow, hard, and high-casualty-producing," said General Mark Milley.
- Ukraine's military intelligence chief said the "fighting will continue one way or another."
US Army General Mark Milley, chairman of the Joint Chiefs of Staff, told BBC News that Ukraine's counteroffensive has little more than 30 days before the weather hindering military efforts.