Title: Sources: Extreme measures being considered to protect whistleblower in event of congressional testimony; House Democrats subpoena Pentagon and Office of Management and Budget, threaten to subpoena three Giuliani associates; Trump: "I'm not siding w

From The Situation Room with Wolf Blitzer and Pamela Brown CNN Podcasts

Trump facing bipartisan backlash over decision to clear the way for Turkish attack on U.S. -allied Kurds in northern Syria; Trump downplays prominent Republicans' criticism of his Syrian decision, says he "consulted with everybody"; Biden facing dual threats: Trump's attacks, Warren surge; New poll shows Biden stronger than Warren or Sanders in matchups against Trump in Wisconsin; NBA under fire for apologizing to China;To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices