Frustrated US diplomats fight back in impeachment probe

Former U.S. ambassador to Ukraine Marie Yovanovitch arrives on Capitol Hill Oct. 11 in Washington. (AP Photo/J. Scott Applewhite)

WASHINGTON — Three years of simmering frustration inside the State Department is boiling over on Capitol Hill as a parade of current and former diplomats testify to their concerns about the Trump administration’s unorthodox policy toward Ukraine.