Then-National Security Advisor John Bolton was reportedly shocked by the shadow foreign policy being conducted by Rudy Giuliani, a top former National Security Council official testified to Congress on Monday, The New York Times reports.

"The effort to pressure Ukraine for political help provoked a heated confrontation inside the White House last summer that so alarmed John R. Bolton, then the national security adviser, that he told an aide to alert White House lawyers, House investigators were told on Monday," the newspaper reported. "Mr. Bolton got into a sharp exchange on July 10 with Gordon D. Sondland, the Trump donor turned ambassador to the European Union, who was working with Rudolph W. Giuliani, the president’s personal lawyer, to press Ukraine to investigate Democrats, according to testimony provided to the investigators."

Former Deputy Secretary of State Wendy Sherman concluded on Monday that Russian Federation President Vladimir Putin must have "something" on President Donald Trump.

"The latest reporting from The New York Times indicates that the thousands of troops that we have there, that the president moved, are now trapped. They don’t have an actual way out since Turkey has cut off the roads and the exit routes that they might use and so now there is the question of will there be an airlift? How will we get the U.S. troops out?" MSNBC's Lawrence O'Donnell asked.

"We haven’t had to get troops out like this since the fall of Saigon," Sherman replied. "This is going to be very, very difficult."