Complex sentence: He continued his career as Ambassador in the Ministry of Foreign Affairs in Belgrade, where he firstly became Deputy Head for Bilateral affairs in 2000 and in 2001 he got appointed as Head of Bilateral Relations and Assistant to the Federal Minister of Foreign Affairs.
Split into simpler sentences: He continued his career as Ambassador in the Ministry of Foreign Affairs in Belgrade, where he became Deputy Head for Bilateral Affairs in 2000. In 2001 he accepted an appointment as Head of Bilateral Relations and Assistant to the Federal Minister of Foreign Affairs.