A senior Pentagon official who oversees military policy on Ukraine is slated to testify this week before House committees conducting an impeachment inquiry into President Trump. Deputy Assistant Secretary of Defense for Russia, Ukraine and Eurasia Laura Cooper is scheduled to appear Wednesday at a closed hearing, according to government officials. Cooper's planned appearance comes on the heels of the Pentagon's refusal to comply with a House subpoena seeking documents related to a previous decision to withhold nearly $400 million...
