Lukens joined the
United States Foreign Service in July 1989, serving in Southern China, Ivory Coast, Australia, Ireland, Iraq, Canada, Senegal, and the United Kingdom. From 2011 to 2014, Lukens was
U.S. Ambassador to Senegal and
Guinea-Bissau. On June 5, 2017, while serving as
Acting Ambassador, Lukens tweeted his support for London mayor
Sadiq Khan, after President
Donald Trump had sent a tweet critical of Khan following a
terrorist incident. In February 2018, Lukens advised his superior,
U.S. Ambassador to the United Kingdom Robert Wood Johnson IV, not to follow through on President Trump's request to try to get the British government to steer the
British Open golf tournament to the
Trump Turnberry resort in Scotland; Lukens warned that it would be an
unethical use of the presidency for private gain. However, Johnson reportedly did make the attempt in an overture to the Secretary of State for Scotland. In a pair of speeches to English universities in October 2018, Lukens used an anecdote about President
Barack Obama's 2013 visit to Senegal to illustrate how allies can handle disagreements. Because of the complimentary reference to Obama, Ambassador Johnson referred to Lukens as a "traitor". Lukens alleged that Johnson had tried to use his position as ambassador to persuade the British government to move the lucrative
British Open golf tournament to Trump's
Turnberry golf resort. Johnson forced Lukens out of his tenure as Deputy Chief of Mission in January 2019, seven months before he was scheduled to leave for his next assignment, effectively ending his diplomatic career. After the end of his tenure as diplomat, Lukens criticized the Trump administration for his handling of the State Department, and for what he felt was a decline in the United States' international influence. In a January 2021 interview with
Newsweek, Lukens' stated that he felt "The last four years has put in doubt the U.S.'s reliability as a partner," and that Trump's administration had damaged both the
relationship between the US and the UK, and the United States' international reputation. ==References==