Pentagon expert may reveal key details in Ukraine probe

In the summer of 2018, Congress allotted $250 million in military aid to Ukraine, part of a continuing effort to help the Eastern European nation defend itself against Russia. Several months later, Laura K. Cooper, the Pentagon official in charge of Ukraine and Russia policy, touted the forthcoming aid package. Now less than a year later, Cooper, who played a crucial role in trying to move the Ukrainian aid forward, is set to testify next week in the impeachment inquiry being led by Rep. Adam Schiff.