Secretary of State Michael Pompeo confronted harsh bipartisan questioning at a Senate hearing dominated by lawmakers' ire over President Donald Trump's policies toward Russia and his trade strategy.

"You come before a group of senators today who are filled with serious doubts about this White House and its conduct of American foreign policy," Republican Sen. Bob Corker, chairman of the Foreign Relations Committee, said in his opening statement. "I can't say it more forcefully. We really need a clear understanding as to what is going on."

Corker also slammed the administration's trade war with China and allies in Europe. White House briefings on trade policy have left senators without "a sense that there's a coherent strategy driving these policies," said Corker who's retiring from the Senate and has had a contentious relationship with Trump.