Newly appointed U.S. ambassador to Turkey, David Satterfield swore in and officially began his duty on Wednesday at the State Department in Washington D.C.

The development was announced by Secretary of State Mike Pompeo through a post on Twitter.

John Bass was the last serving American ambassador to Ankara in 2014-2017. Bass, who now serves as new U.S. envoy to Afghanistan, left Turkey in October 2017 amid a visa crisis between Washington and Ankara. U.S. President Donald Trump announced Satterfield's candidacy on February 16. The U.S. Senate designated him on June 28.

Satterfield's term coincides with a period when Turkish-American relations are strained over a number of issues including U.S. support for PKK terrorist group's affiliate in Syria, Ankara's pending extradition request for Gülenist Terror Group (FETÖ) leader Fetullah Gülen, terrorism probes targeting U.S. consular staff in Turkey among others.

Born in 1954, Satterfield stands out as a senior career diplomat of the U.S. Earning a bachelor's degree from the University of Maryland in 1976, he served as Acting Assistant Secretary of State for Near Eastern Affairs since 2017. Satterfield represented the U.S. in Astana Peace Process meetings between Turkey, Russia and Iran held in Kazakhstan's capital Nur Sultan to end the eight-year-long civil war and bloodshed in Syria.

During the presidential term of Barack Obama, Satterfield served as Director General of the Multinational Force and Observers in Rome from 2009 to 2013 and 2014 to 2017.

In 2014, Satterfield was appointed as Special Advisor to the Secretary of State for Libya, based in Tripoli.

During George W. Bushtarget="_blank"'>