Fiona Hill told impeachment investigators of fears raised by Gordon Sondland’s naive actions, The New York Times wrote.
The Republican senator urged the president to "adjust his thinking."
Turkey’s continued push into Syria comes days after President Donald Trump cleared the way for Turkey’s air and ground offensive.
It's the latest request for documents related to Trump's interactions with the Ukrainian president.
Sen. Lindsey Graham of South Carolina called it "a stain on America's honor."
The department is reeling from daily revelations in the impeachment inquiry into President Donald Trump, according to former senior officials.
His speech at the U.N. General Assembly came shortly after U.S. Secretary of State Mike Pompeo announced new U.S. sanctions targeting Iran’s ability to sell its oil.
One Twitter user told the president that "absolutely everyone knows, 100%, that you have, would, will and do say inappropriate things on a daily basis."
The common belief that Trump will start a conflict on the kingdom's behalf is based on a misunderstanding that a confrontation helps the Saudis.
Ben Rhodes explained why the U.S. has "no obligation" to come to the defense of Saudi Arabia's oil sites.
The Democratic presidential candidate slammed Trump for assuring Saudi Arabia the U.S. is awaiting its direction following an attack on the kingdom's oil supply.
The former defense secretary said he didn't know the former vice president would launch a bid for the White House.
The former secretary of defense has remained tight-lipped about his views of the Trump administration, saying he wouldn't speak out from "the cheap seats."
A senior North Korean official skewered the secretary of state on Saturday for his "thoughtless" comments and warned the U.S. to not "test" Pyongyang's patience.
Trump tweeted that he didn't want to meet with Prime Minister Mette Frederiksen if she won't consider selling Greenland.
“I call on all of you to go. The occupation is real. Barring members of Congress from seeing it does not make it go away,” Rep. Omar said.
The leader of America's largest Jewish denomination is calling on Israeli Prime Minister Benjamin Netanyahu to reverse the ban on the two congresswomen.
President-elect Alejandro Giammattei could follow Guatemala's current leader in eroding human rights and targeting the country's democratic institutions.