Colonel testifies he raised concerns about Ukraine, Trump
By Lisa Mascaro, Mary Clare Jalonick & Colleen Long
Former deputy national security adviser declines to show for impeachment inquiry deposition Monday
By Jeremy Herb
National Security official to testify he heard Trump's Ukraine call, told superiors of his concerns
By Phil Helsel & Leigh Ann Caldwell
NSC official testifies Trump undermined national security with Ukraine pressure
By Kyle Cheney & Andrew Desiderio