sentences:  Before joining "The New Yorker" in May 2017, he worked for Reuters in a variety of capacities, including foreign affairs columnist (2011-2013), investigative reporter (2014-2015) and national security investigations editor (2015-2017).He was described by his "Times" colleagues as "an intrepid yet unassuming reporter who conducts himself modestly around the office, predictably attired in neatly ironed Oxford shirts and, often, his weathered Boston Red Sox cap.