Defterios started as an intern at CNN when the network was launched in the early 1980s. He worked for
Reuters Television from 1984 to 1992, serving as European correspondent and special series producer for
Nightly Business Report, a joint venture with
PBS. In 1988, Defterios served as European Correspondent and Bureau Chief based in London, managing the editorial joint-venture with
Reuters Television. In that post, Defterios covered the fall of the
Berlin Wall. at the annual meeting in Davos and in 2013 chaired the St. Petersburg International Economic Forum with Vladimir Putin and
Angela Merkel. He joined
CNN in 1992, serving as a correspondent for
Lou Dobbs Moneyline in
New York City. He hosted
World Business Today from 1994 to 1996 in London. He also served as anchor of Ahead of the Curve and Business Unusual and was principal anchor for
CNNfn in New York. He is also currently CNN's Emerging Markets Editor. on Day 1 of the
2017 Qatar diplomatic crisis and economic embargo against Qatar by Saudi Arabia, Bahrain, Egypt and the UAE. Defterios was the first global broadcast journalist to enter Iran's oil fields for a series of special reports after the
2015 international nuclear agreement with Iran. ==External work==