ukraine including the president s july 25th phone call with the president of ukraine. two current state department officials, christopher anderson, and catherine croft, testified in under oath depositions to the impeachment inquiry today. christopher anderson served as the ukraine expert advising former special envoy to ukraine kirk volker. christopher anderson was followed in that job by catherine croft. mr. anderson told house impeachment investigators that rudy giuliani prevented the trump administration from strengthsing cooperation with ukraine. christopher anderson described a meeting he had with john bolton on the topic of having senior white house officials engage more with ukraine. john bolton identified an obstacle to better engagement with ukraine. he cautioned that mr. giuliani was a key voice with the president on ukraine which could be an obstacle to increased white house engagement. according to athren croft s opening statement she first