Flake served in the U.S. Senate from Arizona from 2013 to 2019 and in the U.S. House from 2001 to 2013.
Flake retired from the Senate at the end of his term in 2019, saying he was out of step with the Republican Party in the era of former President Donald Trump. He later wrote a book, "Conscience of a Conservative," that was a critique of Trump.
"With this nomination, the Biden Administration reaffirms the best tradition of American foreign policy and diplomacy: the credo that partisan politics should stop at the water’s edge. U.S. foreign policy can and should be bipartisan," Flake said in a statement. "That is my belief as well, and my commitment."
Flake was one of more than two dozen former Republican lawmakers to announce their support for "Republicans for Biden."
Former Reps. Charlie Dent of Pennsylvania, Jim Greenwood of Pennsylvania and Jim Leach of Iowa and Sen. John Warner of Virginia, who died in May, are among the former Republican lawmakers who endorsed Biden last year.
MANCHESTER, NH - OCTOBER 1: Senator Jeff Flake (R-AZ) speaks at St. Anselm College, "After the Deluge: A Rejection of Destructive Politics and a Return to Principle" at the Institute of Politics at St. Anselm College in Manchester, NH on Oct. 1, 2018
The White House also announced Tuesday that Biden is tapping career senior foreign service officer Kent Logsdon to serve as ambassador to Moldova.
Flake, if confirmed, will be dispatched to Ankara at a difficult moment in the U.S.-Turkey relationship.
The list of disagreements is unusually long for the two NATO allies: There’s U.S. support for Kurdish fighters in Syria, as well as Turkey’s purchase of a Russian weapons system. And in April, Biden infuriated Ankara by declaring that the Ottoman-era mass killing and deportations of Armenians was "genocide."
Previous U.S. presidents had avoided using the term out of concern that it would complicate ties with Turkey, which is fiercely proud of its Ottoman history and insists that those killed in the early 20th century were victims of civil war and unrest.
Biden administration and Turkish government officials are also currently in talks about Turkey providing security at Kabul’s Hamid Karzai International Airport after the U.S. completes its pullout from Afghanistan later this summer.
Flake would succeed David Satterfield, a well-respected career foreign service officer who has served as the U.S. ambassador to Turkey for more than two years.
Senator Kyrsten Sinema released a statement on Flake's nomination, saying she's looking forward to supporting his nomination and knows he will make the US proud.
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